Here you can find the source of newInstance(Class
public static <T> T newInstance(Class<T> listener)
//package com.java2s; /*//from w w w . ja va 2s. c o m * Copyright 2008 Whohoo Licensed 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. */ public class Main { public static <T> T newInstance(Class<T> listener) { if (listener == null) { return null; } try { return listener.newInstance(); } catch (InstantiationException e) { throw new RuntimeException(e); } catch (IllegalAccessException e) { throw new RuntimeException(e); } } }