Attachment 25125 Details for Bug 48903 – MyClassLoader.java - sample of reflectively calling JDK7 API

MyClassLoader.java - sample of reflectively calling JDK7 API

MyClassLoader.java (text/plain), 1.74 KB, created by Konstantin Kolinko on 2010-03-14 00:31:00 UTC

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Creator: Konstantin Kolinko

Created: 2010-03-14 00:31:00 UTC

Size: 1.74 KB

patch

obsolete

>/*
> * Licensed to the Apache Software Foundation (ASF) under one or more
> * contributor license agreements.  See the NOTICE file distributed with
> * this work for additional information regarding copyright ownership.
> * The ASF licenses this file to You under the Apache License, Version 2.0
> * (the "License"); you may not use this file except in compliance with
> * the License.  You may obtain a copy of the License at
> * 
> *      http://www.apache.org/licenses/LICENSE-2.0
> * 
> * Unless required by applicable law or agreed to in writing, software
> * distributed under the License is distributed on an "AS IS" BASIS,
> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
> * See the License for the specific language governing permissions and
> * limitations under the License.
> */
>package foo;
>import java.net.*;
>import java.lang.reflect.*;
>public class MyClassLoader extends URLClassLoader {
>    static {
>        try {
>            Method m = ClassLoader.class.getDeclaredMethod("registerAsParallelCapable");
>            m.setAccessible(true);
>            Object result = m.invoke(null);
>            System.err.println("Result: " + result);
>        } catch (Throwable t) {
>            t.printStackTrace();
>        }
>    }
>
>    public MyClassLoader(URL[] urls) {
>        super(urls);
>        try {
>            Method m = ClassLoader.class.getDeclaredMethod("getClassLoadingLock", String.class);
>            m.setAccessible(true);
>            Object result = m.invoke(this, "foo.Bar");
>            System.err.println("Lock: " + result);
>        } catch (Throwable t) {
>            t.printStackTrace();
>        }
>    }
>
>    public static void main(String[] args){
>        new MyClassLoader(new URL[0]);
>    }
>}

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