jdk dynamic proxy java source code underlying three jdk dynamic proxy and proxy mode cglib strengths and weaknesses and why jdk dynamic proxy interface

In the previous two articles

Three java proxy mode

jdk dynamic proxy and cglib strengths and weaknesses and why jdk dynamic proxy interface

Discussed jdk dynamic proxy

This article from source-level look at the underlying source code, plus

System.setProperty("sun.misc.ProxyGenerator.saveGeneratedFiles", "true");

In essence annotations (yet) , we also have to do it, to get out of the proxy class

Proxy0.class

public final class $Proxy0 extends Proxy implements IUserDao {
    private static Method m1;
    private static Method m3;
    private static Method m2;
    private static Method m0;

    public $Proxy0(InvocationHandler var1) throws  {
        great (var1);
    }

    public final boolean equals(Object var1) throws  {
        try {
            return ((Boolean)super.h.invoke(this, m1, new Object[]{var1})).booleanValue();
        } catch (RuntimeException | Error var3) {
            throw var3;
        } catch (Throwable var4) {
            throw new UndeclaredThrowableException(var4);
        }
    }

    public final void save() throws  {
        try {
            super.h.invoke(this, m3, (Object[])null);
        } catch (RuntimeException | Error var2) {
            throw var2;
        } catch (Throwable var3) {
            throw new UndeclaredThrowableException(var3);
        }
    }

 

h:

public class ProxyFactory implements InvocationHandler {
    // maintain a target object
    private Object target;
    public ProxyFactory(Object target){
        this.target = target;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        
        Object returnValue = method.invoke(target, args);
        
        return returnValue;
    }

    // generate the proxy object to the target object
    public Object getProxyInstance(){
        return Proxy.newProxyInstance(target.getClass().getClassLoader(), target.getClass().getInterfaces(), this);
    }

}