Here you can find the source of simpleClassName(Class> clazz)
public static String simpleClassName(Class<?> clazz)
//package com.java2s; /*// w w w . j a va2 s . c o m * 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. */ public class Main { private static final char PACKAGE_SEPARATOR_CHAR = '.'; public static String simpleClassName(Class<?> clazz) { if (clazz == null) { throw new NullPointerException("clazz"); } String className = clazz.getName(); final int lastDotIdx = className.lastIndexOf(PACKAGE_SEPARATOR_CHAR); if (lastDotIdx > -1) { return className.substring(lastDotIdx + 1); } return className; } }