java常用工具类

参考自dubbo源码

获取PID

public class ConfigUtils {
  public static int getPid() {
        if (PID < 0) {
            try {
                RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
                String name = runtime.getName(); // format: "pid@hostname"
                PID = Integer.parseInt(name.substring(0, name.indexOf('@')));
            } catch (Throwable e) {
                PID = 0;
            }
        }
        return PID;
    }
}

判断是否为get/set方法

public class ClassHelper {
   public static boolean isSetter(Method method) {
        return method.getName().startsWith("set")
                && !"set".equals(method.getName())
                && Modifier.isPublic(method.getModifiers())
                && method.getParameterCount() == 1
                && isPrimitive(method.getParameterTypes()[0]);
    }

    public static boolean isGetter(Method method) {
        String name = method.getName();
        return (name.startsWith("get") || name.startsWith("is"))
                && !"get".equals(name) && !"is".equals(name)
                && !"getClass".equals(name) && !"getObject".equals(name)
                && Modifier.isPublic(method.getModifiers())
                && method.getParameterTypes().length == 0
                && isPrimitive(method.getReturnType());
    }
}