案例介绍
异常处理是java语言非常重要的一个语法,本章主要实现如何处理抛出的异常。
在Java语言中,异常可以分为两类:Checked异常和Unchecked异常。Unchecked异常包括java.lang.RuntimeException、java.lang.Error以及它们的子类,提前异常都是Checked异常。所有异常都最终继承自java.lang.Throwable。如果一个方法有可能导致Checked异常抛出,则该方法要么需要捕获该异常并妥善处理,要么必须把该异常列在自己的throws子句中,否则无法通过编译。Unchanged异常没有这个限制。请注意,Java虚拟机规范并没有这个规定,这只是Java语言的语法规则。
异常可以由Java虚拟机抛出,也可以由Java代码抛出。当Java虚拟机在运行过程中遇到比较严重的问题时,会抛出java.lang.Error的某个子类,如StackOverflowError、OutOfMemoryError等。程序一般无法从这种异常里恢复,所以在代码中通常也不必关心这类异常。
一部分执行在执行过程中会导致Java虚拟机抛出java.lang.RuntimeException的某个子类,如NullPointerException、IndexOutOfBoundsException等。这类异常一般是代码中的bug导致的,需要格外注意。在代码中抛出和处理异常是由athrow指令和方法的异常处理表配合完成的。
环境准备
- jdk 1.8.0
- IntelliJ IDEA Community Edition 2018.3.1 x64
配置信息
- 调试配置
- 配置位置:Run/Debug Configurations -> program arguments
- 配置内容:-Xjre “C:\Program Files\Java\jdk1.8.0_161\jre” E:\itstack\git\istack-demo\itstack-demo-jvm\itstack-demo-jvm-10\target\test-classes\org\itstack\demo\test\HelloWorld
代码示例
itstack-demo-jvm-10
├── pom.xml
└── src
└── main
│ └── java
│ └── org.itstack.demo.jvm
│ ├── _native
│ │ ├── java
│ │ │ ├── _Class.java
│ │ │ ├── _Double.java
│ │ │ ├── _Float.java
│ │ │ ├── _Object.java
│ │ │ ├── _String.java
│ │ │ ├── _System.java
│ │ │ └── _Throwable.java
│ │ └── sun
│ ├── NativeMethod.java
│ └── Registry.java
│ ├── classfile
│ │ ├── attributes
│ │ ├── constantpool
│ │ ├── ClassFile.java
│ │ ├── ClassReader.java
│ │ └── MemberInfo.java
│ ├── classpath
│ │ ├── impl
│ │ │ ├── CompositeEntry.java
│ │ │ ├── DirEntry.java
│ │ │ ├── WildcardEntry.java
│ │ │ └── ZipEntry.java
│ │ ├── Classpath.java
│ │ └── Entry.java
│ ├── classpath
│ │ ├── base
│ │ │ ├── BytecodeReader.java
│ │ │ ├── ClassInitLogic.java
│ │ │ ├── Instruction.java
│ │ │ ├── InstructionBranch.java
│ │ │ ├── InstructionIndex8.java
│ │ │ ├── InstructionIndex16.java
│ │ │ ├── InstructionNoOperands.java
│ │ │ └── MethodInvokeLogic.java
│ │ ├── comparisons
│ │ ├── constants
│ │ ├── control
│ │ ├── conversions
│ │ ├── extended
│ │ ├── loads
│ │ ├── math
│ │ ├── references
│ │ │ ├── ANEW_ARRAY.java
│ │ │ ├── ARRAY_LENGTH.java
│ │ │ ├── ATHROW.java
│ │ │ ├── CHECK_CAST.java
│ │ │ ├── GET_FIELD.java
│ │ │ ├── GET_STATIC.java
│ │ │ ├── INSTANCE_OF.java
│ │ │ ├── INVOKE_INTERFACE.java
│ │ │ ├── INVOKE_SPECIAL.java
│ │ │ ├── INVOKE_STATIC.java
│ │ │ ├── INVOKE_VIRTUAL.java
│ │ │ ├── MULTI_ANEW_ARRAY.java
│ │ │ ├── NEW.java
│ │ │ ├── NEW_ARRAY.java
│ │ │ ├── PUT_FIELD.java
│ │ │ └── PUT_STATIC.java
│ │ ├── reserved
│ │ │ └── INVOKE_NATIVE.java
│ │ ├── stack
│ │ ├── store
│ │ │ └── xastore
│ │ │ ├── AASTORE.java
│ │ │ ├── BASTORE.java
│ │ │ ├── CASTORE.java
│ │ │ ├── DASTORE.java
│ │ │ ├── FASTORE.java
│ │ │ ├── IASTORE.java
│ │ │ ├── LASTORE.java
│ │ │ └── SASTORE.java
│ │ └── Factory
│ ├── rtda
│ │ ├── heap
│ │ │ ├── constantpool
│ │ │ ├── methodarea
│ │ │ │ ├── Class.java
│ │ │ │ ├── ClassMember.java
│ │ │ │ ├── ExceptionTable.java
│ │ │ │ ├── Field.java
│ │ │ │ ├── Method.java
│ │ │ │ ├── MethodDescriptor.java
│ │ │ │ ├── MethodDescriptorParser.java
│ │ │ │ ├── MethodLookup.java
│ │ │ │ ├── Object.java
│ │ │ │ ├── Slots.java
│ │ │ │ └── StringPool.java
│ │ │ └── ClassLoader.java
│ │ ├── Frame.java
│ │ ├── JvmStack.java
│ │ ├── LocalVars.java
│ │ ├── OperandStack.java
│ │ ├── Slot.java
│ │ └── Thread.java
│ ├── Cmd.java
│ ├── Interpret.java
│ └── Main.java
└── test
└── java
└── org.itstack.demo.test
└── HelloWorld.java
如下为新增代码:
ClassReader.java (优化)
/**
* http://www.itstack.org
* create by fuzhengwei on 2019/5/12
* <p>
* java虚拟机定义了u1、u2、u4三种数据类型来表示;1字节、2字节、4字节,无符号整数。
* 在如下实现中,用增位方式表示无符号类型:
* u1、u2可以用int类型存储,因为int类型是4字节
* u4 需要用long类型存储,因为long类型是8字节
*/
public class ClassReader {
private byte[] data;
public ClassReader(byte[] data) {
this.data = data;
}
//u1
public int readUint8() {
byte[] val = readByte(1);
return byte2int(val);
}
//u2
public int readUint16() {
byte[] val = readByte(2);
return byte2int(val);
}
//u4
public long readUint32() {
byte[] val = readByte(4);
String str_hex = new BigInteger(1, val).toString(16);
return Long.parseLong(str_hex, 16);
}
public int readUint32TInteger(){
byte[] val = readByte(4);
return new BigInteger(1, val).intValue();
}
public float readUint64TFloat() {
byte[] val = readByte(8);
return new BigInteger(1, val).floatValue();
}
public long readUint64TLong() {
byte[] val = readByte(8);
return new BigInteger(1, val).longValue();
}
public double readUint64TDouble() {
byte[] val = readByte(8);
return new BigInteger(1, val).doubleValue();
}
public int[] readUint16s() {
int n = this.readUint16();
int[] s = new int[n];
for (int i = 0; i < n; i++) {
s[i] = this.readUint16();
}
return s;
}
public byte[] readBytes(int n) {
return readByte(n);
}
private byte[] readByte(int length) {
byte[] copy = new byte[length];
System.arraycopy(data, 0, copy, 0, length);
System.arraycopy(data, length, data, 0, data.length - length);
return copy;
}
private int byte2int(byte[] val) {
String str_hex = new BigInteger(1, val).toString(16);
return Integer.parseInt(str_hex, 16);
}
}
_Throwable.java
public class _Throwable {
private StackTraceElement stackTraceElement;
private final String jlThrowable = "java/lang/Throwable";
public _Throwable() {
Registry.register(jlThrowable, "fillInStackTrace", "(I)Ljava/lang/Throwable;", new NativeMethod(this, "fillInStackTrace"));
Registry.register(jlThrowable, "registerNatives", "()V", new NativeMethod(this, "registerNatives"));
}
public void registerNatives(Frame frame) {
// do nothing
}
public String string() {
return String.format("%s.%s(%s:%d)", this.stackTraceElement.className, this.stackTraceElement.methodName, this.stackTraceElement.fileName, this.stackTraceElement.lineNumber);
}
public void fillInStackTrace(Frame frame) {
Object thiz = frame.localVars().getThis();
frame.operandStack().pushRef(thiz);
_Throwable[] stes = createStackTraceElements(thiz, frame.thread());
thiz.setExtra(stes);
}
private _Throwable[] createStackTraceElements(Object tObj, Thread thread) {
int skip = distanceToObject(tObj.clazz()) + 2;
Frame[] frames = thread.getFrames();
_Throwable[] stes = new _Throwable[frames.length - skip];
int idx = 0;
for (int i = skip; i < frames.length; i++) {
stes[idx] = createStackTraceElement(frames[i]);
}
return stes;
}
private int distanceToObject(Class clazz) {
int distance = 0;
for (Class c = clazz.superClass(); c != null; c = c.superClass()) {
distance++;
}
return distance;
}
private _Throwable createStackTraceElement(Frame frame) {
Method method = frame.method();
Class clazz = method.clazz();
StackTraceElement stackTraceElement = new StackTraceElement();
stackTraceElement.fileName = clazz.sourceFile();
stackTraceElement.className = clazz.javaName();
stackTraceElement.methodName = method.name();
stackTraceElement.lineNumber = method.getLineNumber(frame.nextPC() - 1);
_Throwable throwable = new _Throwable();
throwable.stackTraceElement = stackTraceElement;
return throwable;
}
private class StackTraceElement {
private String fileName;
private String className;
private String methodName;
private int lineNumber;
}
}
ATHROW.java
public class ATHROW extends InstructionNoOperands {
@Override
public void execute(Frame frame) {
Object ex = frame.operandStack().popRef();
if (ex == null) {
throw new NullPointerException();
}
Thread thread = frame.thread();
if (!findAndGotoExceptionHandler(thread, ex)) {
handleUncaughtException(thread, ex);
}
}
private boolean findAndGotoExceptionHandler(Thread thread, Object ex) {
do {
Frame frame = thread.currentFrame();
int pc = frame.nextPC() - 1;
int handlerPc = frame.method().findExceptionHandler(ex.clazz(), pc);
if (handlerPc > 0) {
OperandStack stack = frame.operandStack();
stack.clear();
stack.pushRef(ex);
frame.setNextPC(handlerPc);
return true;
}
thread.popFrame();
} while (!thread.isStackEmpty());
return false;
}
private void handleUncaughtException(Thread thread, Object ex) {
thread.clearStack();
Object jMsg = ex.getRefVar("detailMessage", "Ljava/lang/String;");
String msg = StringPool.goString(jMsg);
System.out.println(ex.clazz().javaName() + ":" + msg);
java.lang.Object extra = ex.extra();
_Throwable[] throwables = (_Throwable[]) extra;
for (_Throwable t : throwables) {
System.out.println(t.string());
}
}
}
ExceptionTable.java
public class ExceptionTable {
private ExceptionHandler[] exceptionTable;
public ExceptionTable(CodeAttribute.ExceptionTableEntry[] entries, RunTimeConstantPool runTimeConstantPool) {
this.exceptionTable = new ExceptionHandler[entries.length];
int i = 0;
for (CodeAttribute.ExceptionTableEntry entry : entries) {
ExceptionHandler handler = new ExceptionHandler(
entry.startPC(),
entry.endPC(),
entry.handlerPC(),
getCatchType(entry.catchType(), runTimeConstantPool)
);
this.exceptionTable[i++] = handler;
}
}
public ClassRef getCatchType(int idx, RunTimeConstantPool runTimeConstantPool) {
if (idx == 0) return null;
return (ClassRef) runTimeConstantPool.getConstants(idx);
}
public ExceptionHandler findExceptionHandler(Class exClass, int pc) {
for (ExceptionHandler handler : exceptionTable) {
if (pc >= handler.startPC && pc < handler.endPC) {
if (null == handler.catchType) {
return handler;
}
Class catchClass = handler.catchType.resolvedClass();
if (catchClass == exClass || catchClass.isSubClassOf(exClass)) {
return handler;
}
}
}
return null;
}
class ExceptionHandler {
int startPC;
int endPC;
int handlerPC;
ClassRef catchType;
ExceptionHandler(int startPC, int endPC, int handlerPC, ClassRef catchType) {
this.startPC = startPC;
this.endPC = endPC;
this.handlerPC = handlerPC;
this.catchType = catchType;
}
}
}
Method.java
public class Method extends ClassMember {
public int maxStack;
public int maxLocals;
public byte[] code;
private ExceptionTable exceptionTable;
private LineNumberTableAttribute lineNumberTable;
private int argSlotCount;
Method[] newMethods(Class clazz, MemberInfo[] cfMethods) {
Method[] methods = new Method[cfMethods.length];
for (int i = 0; i < cfMethods.length; i++) {
methods[i] = newMethod(clazz, cfMethods[i]);
}
return methods;
}
private Method newMethod(Class clazz, MemberInfo cfMethod) {
Method method = new Method();
method.clazz = clazz;
method.copyMemberInfo(cfMethod);
method.copyAttributes(cfMethod);
MethodDescriptor md = MethodDescriptorParser.parseMethodDescriptorParser(method.descriptor);
method.calcArgSlotCount(md.parameterTypes);
if (method.isNative()) {
method.injectCodeAttribute(md.returnType);
}
return method;
}
private void injectCodeAttribute(String returnType) {
this.maxStack = 4; //todo
this.maxLocals = this.argSlotCount;
switch (returnType.getBytes()[0]) {
case 'V':
this.code = new byte[]{(byte) 0xfe, (byte) 0xb1};
break;
case 'L':
case '[':
this.code = new byte[]{(byte) 0xfe, (byte) 0xb0};
break;
case 'D':
this.code = new byte[]{(byte) 0xfe, (byte) 0xaf};
break;
case 'F':
this.code = new byte[]{(byte) 0xfe, (byte) 0xae};
break;
case 'J':
this.code = new byte[]{(byte) 0xfe, (byte) 0xad};
break;
default:
this.code = new byte[]{(byte) 0xfe, (byte) 0xac};
break;
}
}
private void copyAttributes(MemberInfo cfMethod) {
CodeAttribute codeAttr = cfMethod.codeAttribute();
if (null != codeAttr) {
this.maxStack = codeAttr.maxStack();
this.maxLocals = codeAttr.maxLocals();
this.code = codeAttr.data();
this.lineNumberTable = codeAttr.lineNumberTableAttribute();
this.exceptionTable = new ExceptionTable(codeAttr.exceptionTable(), this.clazz.constantPool());
}
}
private void calcArgSlotCount(List<String> parameterTypes) {
for (String paramType : parameterTypes) {
this.argSlotCount++;
if ("J".equals(paramType) || "D".equals(paramType)) {
this.argSlotCount++;
}
}
if (!this.isStatic()) {
this.argSlotCount++;
}
}
public boolean isSynchronized() {
return 0 != (this.accessFlags & AccessFlags.ACC_SYNCHRONIZED);
}
public boolean isBridge() {
return 0 != (this.accessFlags & AccessFlags.ACC_BRIDGE);
}
public boolean isVarargs() {
return 0 != (this.accessFlags & AccessFlags.ACC_VARARGS);
}
public boolean isNative() {
return 0 != (this.accessFlags & AccessFlags.ACC_NATIVE);
}
public boolean isAbstract() {
return 0 != (this.accessFlags & AccessFlags.ACC_ABSTRACT);
}
public boolean isStrict() {
return 0 != (this.accessFlags & AccessFlags.ACC_STRICT);
}
public int maxStack() {
return this.maxStack;
}
public int maxLocals() {
return this.maxLocals;
}
public byte[] code() {
return this.code;
}
public int argSlotCount() {
return this.argSlotCount;
}
public int findExceptionHandler(Class exClass, int pc) {
ExceptionTable.ExceptionHandler handler = this.exceptionTable.findExceptionHandler(exClass, pc);
if (handler != null) {
return handler.handlerPC;
}
return -1;
}
public int getLineNumber(int pc) {
if (this.isNative()) return -2;
if (this.lineNumberTable == null) return -1;
return this.lineNumberTable.getLineNumber(pc);
}
}
HelloWorld.java
public class HelloWorld {
public static void main(String[] args) {
throw new RuntimeException("自定义异常");
}
}
测试结果
-Xjre “C:\Program Files\Java\jdk1.8.0_161\jre” E:\itstack\git\istack-demo\itstack-demo-jvm\itstack-demo-jvm-10\target\test-classes\org\itstack\demo\test\HelloWorld -verbose
public class org.itstack.demo.test.HelloWorld {
public org.itstack.demo.test.HelloWorld();
Code:
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]);
Code:
0: new #2 // class java/lang/RuntimeException
3: dup
4: ldc #3 // String 自定义异常
6: invokespecial #4 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
9: athrow
}
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x12 -> LDC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader0() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader0() 寄存器(指令):0xb4 -> GET_FIELD
java/lang/Class.getClassLoader0() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.getClassLoader() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.getClassLoader() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.getClassLoader() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.getClassLoader() 寄存器(指令):0x01 -> ACONST_NULL
java/lang/Class.getClassLoader() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Class.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Class.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Class.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Class.<clinit>() 寄存器(指令):0x04 -> ICONST_1
java/lang/Class.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Class.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Class.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Class.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Class.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Class.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Class.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xac -> IRETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xac -> IRETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x9a -> IFNE
java/lang/Throwable.<clinit>() 寄存器(指令):0x04 -> ICONST_1
java/lang/Throwable.<clinit>() 寄存器(指令):0xa7 -> GOTO
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/util/ArrayList.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/util/ArrayList.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/util/ArrayList.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/util/ArrayList.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/util/ArrayList.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/util/ArrayList.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/util/ArrayList.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Throwable.<clinit>() 寄存器(指令):0x59 -> DUP
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0x03 -> ICONST_0
java/util/AbstractList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/AbstractList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9e -> IFLE
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9a -> IFNE
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb2 -> GET_STATIC
java/util/ArrayList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/ArrayList.<init>() 寄存器(指令):0xa7 -> GOTO
java/util/ArrayList.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/util/Collections.<clinit>() 寄存器(指令):0x59 -> DUP
java/util/Collections.<clinit>() 寄存器(指令):0x01 -> ACONST_NULL
java/util/Collections.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptySet.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptySet.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptySet.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptySet.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractSet.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractSet.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractSet.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptySet.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptySet.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/util/Collections.<clinit>() 寄存器(指令):0x59 -> DUP
java/util/Collections.<clinit>() 寄存器(指令):0x01 -> ACONST_NULL
java/util/Collections.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptyList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptyList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptyList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptyList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0x03 -> ICONST_0
java/util/AbstractList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/AbstractList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptyList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptyList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xbb -> NEW
java/util/Collections.<clinit>() 寄存器(指令):0x59 -> DUP
java/util/Collections.<clinit>() 寄存器(指令):0x01 -> ACONST_NULL
java/util/Collections.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractMap.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractMap.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractMap.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$EmptyMap.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/util/Collections.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xc1 -> INSTANCE_OF
java/util/Collections.unmodifiableList() 寄存器(指令):0x99 -> IFEQ
java/util/Collections.unmodifiableList() 寄存器(指令):0xbb -> NEW
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Object.registerNatives() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Object.registerNatives() 寄存器(指令):0xb1 -> RETURN
java/lang/Object.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.unmodifiableList() 寄存器(指令):0xbb -> NEW
java/util/Collections.unmodifiableList() 寄存器(指令):0x59 -> DUP
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xc7 -> IFNONNULL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.unmodifiableList() 寄存器(指令):0xb0 -> ARETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x12 -> LDC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader0() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader0() 寄存器(指令):0xb4 -> GET_FIELD
java/lang/Class.getClassLoader0() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.getClassLoader() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.getClassLoader() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.getClassLoader() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.getClassLoader() 寄存器(指令):0x01 -> ACONST_NULL
java/lang/Class.getClassLoader() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xac -> IRETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xac -> IRETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x9a -> IFNE
java/lang/Throwable.<clinit>() 寄存器(指令):0x04 -> ICONST_1
java/lang/Throwable.<clinit>() 寄存器(指令):0xa7 -> GOTO
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Throwable.<clinit>() 寄存器(指令):0x59 -> DUP
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0x03 -> ICONST_0
java/util/AbstractList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/AbstractList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9e -> IFLE
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9a -> IFNE
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb2 -> GET_STATIC
java/util/ArrayList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/ArrayList.<init>() 寄存器(指令):0xa7 -> GOTO
java/util/ArrayList.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xc1 -> INSTANCE_OF
java/util/Collections.unmodifiableList() 寄存器(指令):0x99 -> IFEQ
java/util/Collections.unmodifiableList() 寄存器(指令):0xbb -> NEW
java/util/Collections.unmodifiableList() 寄存器(指令):0x59 -> DUP
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xc7 -> IFNONNULL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.unmodifiableList() 寄存器(指令):0xb0 -> ARETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x12 -> LDC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Class.getClassLoader0() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.getClassLoader0() 寄存器(指令):0xb4 -> GET_FIELD
java/lang/Class.getClassLoader0() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.getClassLoader() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.getClassLoader() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.getClassLoader() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.getClassLoader() 寄存器(指令):0x01 -> ACONST_NULL
java/lang/Class.getClassLoader() 寄存器(指令):0xb0 -> ARETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x4c -> ASTORE_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Class.desiredAssertionStatus0() 寄存器(指令):0xac -> IRETURN
java/lang/Class.desiredAssertionStatus() 寄存器(指令):0xac -> IRETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0x9a -> IFNE
java/lang/Throwable.<clinit>() 寄存器(指令):0x04 -> ICONST_1
java/lang/Throwable.<clinit>() 寄存器(指令):0xa7 -> GOTO
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xbb -> NEW
java/lang/Throwable.<clinit>() 寄存器(指令):0x59 -> DUP
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/AbstractCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/AbstractList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/AbstractList.<init>() 寄存器(指令):0x03 -> ICONST_0
java/util/AbstractList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/AbstractList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9e -> IFLE
java/util/ArrayList.<init>() 寄存器(指令):0x1b -> ILOAD_1
java/util/ArrayList.<init>() 寄存器(指令):0x9a -> IFNE
java/util/ArrayList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/ArrayList.<init>() 寄存器(指令):0xb2 -> GET_STATIC
java/util/ArrayList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/ArrayList.<init>() 寄存器(指令):0xa7 -> GOTO
java/util/ArrayList.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb8 -> INVOKE_STATIC
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xc1 -> INSTANCE_OF
java/util/Collections.unmodifiableList() 寄存器(指令):0x99 -> IFEQ
java/util/Collections.unmodifiableList() 寄存器(指令):0xbb -> NEW
java/util/Collections.unmodifiableList() 寄存器(指令):0x59 -> DUP
java/util/Collections.unmodifiableList() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections.unmodifiableList() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xc7 -> IFNONNULL
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableCollection.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/util/Collections$UnmodifiableList.<init>() 寄存器(指令):0xb1 -> RETURN
java/util/Collections.unmodifiableList() 寄存器(指令):0xb0 -> ARETURN
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.<clinit>() 寄存器(指令):0xbd -> ANEW_ARRAY
java/lang/Throwable.<clinit>() 寄存器(指令):0xb3 -> PUT_STATIC
java/lang/Throwable.<clinit>() 寄存器(指令):0xb1 -> RETURN
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0xbb -> NEW
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0x59 -> DUP
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0x12 -> LDC
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/RuntimeException.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/RuntimeException.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/lang/RuntimeException.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Exception.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Exception.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Exception.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Object.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0xb2 -> GET_STATIC
java/lang/Throwable.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0xb2 -> GET_STATIC
java/lang/Throwable.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0xb6 -> INVOKE_VIRTUAL
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb4 -> GET_FIELD
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xc7 -> IFNONNULL
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x03 -> ICONST_0
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb7 -> INVOKE_SPECIAL
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xfe -> INVOKE_NATIVE
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb0 -> ARETURN
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x57 -> POP
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb2 -> GET_STATIC
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb5 -> PUT_FIELD
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.fillInStackTrace() 寄存器(指令):0xb0 -> ARETURN
java/lang/Throwable.<init>() 寄存器(指令):0x57 -> POP
java/lang/Throwable.<init>() 寄存器(指令):0x2a -> ALOAD_0
java/lang/Throwable.<init>() 寄存器(指令):0x2b -> ALOAD_1
java/lang/Throwable.<init>() 寄存器(指令):0xb5 -> PUT_FIELD
java/lang/Throwable.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/Exception.<init>() 寄存器(指令):0xb1 -> RETURN
java/lang/RuntimeException.<init>() 寄存器(指令):0xb1 -> RETURN
org/itstack/demo/test/HelloWorld.main() 寄存器(指令):0xbf -> ATHROW
java.lang.RuntimeException:自定义异常
org.itstack.demo.test.HelloWorld.main(HelloWorld.java:9)
Process finished with exit code 0
本文在开源项目:https://github.com/Android-Alvin/Android-LearningNotes 中已收录,里面包含不同方向的自学编程路线、面试题集合/面经、及系列技术文章等,资源持续更新中...
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