Here you can find the source of simpleName(Class c)
public static String simpleName(Class<?> c)
//package com.java2s; /*BEGIN_COPYRIGHT_BLOCK* /*from www . jav a 2 s . c o m*/ PLT Utilities BSD License Copyright (c) 2007-2010 JavaPLT group at Rice University All rights reserved. Developed by: Java Programming Languages Team Rice University http://www.cs.rice.edu/~javaplt/ Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the JavaPLT group, Rice University, nor the names of the library's contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *END_COPYRIGHT_BLOCK*/ public class Main { /** * Produce the simple name of the given class, as specified by {@link Class#getSimpleName}, * with an improved scheme for anonymous classes. The simple name of a class is generally * the unqualified name used to declare it. Arrays evaluate to the simple name of their * element type, followed by a pair of brackets. Anonymous classes, rather than evaluating to an * empty string, produce something like "anonymous Foo" (where Foo is the supertype). Assumes * non-anonymous classes follow a naming convention in which the simple name is the suffix * of the full class name following all '.' and '$' characters, and immediately following a * (possibly empty) sequence of digits. */ public static String simpleName(Class<?> c) { if (c.isArray()) { return simpleName(c.getComponentType()) + "[]"; } else if (isAnonymousClass(c)) { if (c.getInterfaces().length > 0) { return "anonymous " + simpleName(c.getInterfaces()[0]); } else { return "anonymous " + simpleName(c.getSuperclass()); } } else { String fullName = c.getName(); int dot = fullName.lastIndexOf('.'); int dollar = fullName.lastIndexOf('$'); int nameStart = (dot > dollar) ? dot + 1 : dollar + 1; int length = fullName.length(); while (nameStart < length && Character.isDigit(fullName.charAt(nameStart))) { nameStart++; } return fullName.substring(nameStart); } } /** An implementation of {@link Class#isAnonymousClass}, which is unavailable prior to Java 5.0 */ public static boolean isAnonymousClass(Class<?> c) { String name = c.getName(); String nameEnd = name.substring(name.lastIndexOf('$') + 1); // index is -1 if there is none for (int i = 0; i < nameEnd.length(); i++) { if (Character.isJavaIdentifierStart(nameEnd.charAt(i))) { return false; } } return true; } }