类作为引用参数的传递

package test;

 public class Person {

String name; private int age;

 public void show(){

System.out.println("我的名字是"+name+",我今年"+age+"岁.");

 }

public void setAge(int age){

 this.age=age;

 }

public int getAge(){

 return this.age;

 }

public int compare(Person p){//类名作为参数传递的类型

if(p.age==this.age){

return 0;

}

return 1;

 } } 

 public class PersonDemo {

 public static void main(String[] args) {

 Person p1=new Person();

p1.setAge(20);

 Person p2=new Person();

p2.setAge(30);

int x=p1.compare(p2);//类作为参数类型的测试

System.out.println(x);

 } }