hadoop源码学习(-)

这是从hadoop源码中间截取的一个片段，你看看你能不能看懂：如果不能看懂，说明你的javase基础很差。

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private static class GroupFactory   extends CounterGroupFactory<Counter, CounterGroup> {   @Override protected <T extends Enum<T>> FrameworkGroupFactory<CounterGroup> newFrameworkGroupFactory(final Class<T> cls) {          return new FrameworkGroupFactory<CounterGroup>() {               @Override               public CounterGroup newGroup(String name) {                         return new FrameworkGroupImpl<T>(cls); // impl in this package               }           }; //这是一个匿名类的写法。    }   @Override protected CounterGroup newGenericGroup(String name, String displayName, Limits limits) {          return new GenericGroup(name, displayName, limits);        }   @Override protected CounterGroup newFileSystemGroup() {       return new FileSystemGroup();       } }