java 内存溢出（方法区溢出）

package jvm;

import java.lang.reflect.Method;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;


/**
 * -XX:PermSize=10M -XX:MaxPermSize=10M
 * @author gsdhaiji
 *
 */
public class JavaMethoAreaOOM {

	public static void main(String[] args) {
		
		int i = 1;
		while(true) {
			Enhancer enhance = new Enhancer();
			enhance.setSuperclass(OOMObject.class);
			enhance.setUseCache(false);
			enhance.setCallback(new MethodInterceptor() {
				
				@Override
				public Object intercept(Object arg0, Method arg1, Object[] arg2,
						MethodProxy arg3) throws Throwable {
					System.out.println("before invoke method" + arg1);
					Object obj =  arg3.invokeSuper(arg0, arg2);
					System.out.println("after inovke method" + arg1);
					return obj;
				}
			});
			OOMObject obj = (OOMObject)enhance.create();
			obj.sayHello();
		}
		
		
	}
	
	static class OOMObject {
		public  void sayHello() {
			System.out.println ("say: hello!");
		}
		
	}
}

使用字节码技术，来增加类，jvm保证方法区可以动态加载这些类到内存