//: ShowMethods.java ////////////////////////////////////////////////// // Copyright (c) Bruce Eckel, 1998 // Source code file from the book "Thinking in Java" // All rights reserved EXCEPT as allowed by the // following statements: You can freely use this file // for your own work (personal or commercial), // including modifications and distribution in // executable form only. Permission is granted to use // this file in classroom situations, including its // use in presentation materials, as long as the book // "Thinking in Java" is cited as the source. // Except in classroom situations, you cannot copy // and distribute this code; instead, the sole // distribution point is http://www.BruceEckel.com // (and official mirror sites) where it is // freely available. You cannot remove this // copyright and notice. You cannot distribute // modified versions of the source code in this // package. You cannot use this file in printed // media without the express permission of the // author. Bruce Eckel makes no representation about // the suitability of this software for any purpose. // It is provided "as is" without express or implied // warranty of any kind, including any implied // warranty of merchantability, fitness for a // particular purpose or non-infringement. The entire // risk as to the quality and performance of the // software is with you. Bruce Eckel and the // publisher shall not be liable for any damages // suffered by you or any third party as a result of // using or distributing software. In no event will // Bruce Eckel or the publisher be liable for any // lost revenue, profit, or data, or for direct, // indirect, special, consequential, incidental, or // punitive damages, however caused and regardless of // the theory of liability, arising out of the use of // or inability to use software, even if Bruce Eckel // and the publisher have been advised of the // possibility of such damages. Should the software // prove defective, you assume the cost of all // necessary servicing, repair, or correction. If you // think you've found an error, please email all // modified files with clearly commented changes to: // Bruce@EckelObjects.com. (Please use the same // address for non-code errors found in the book.) ///////////////////////////////////////////////// // Using Java 1.1 reflection to show all the // methods of a class, even if the methods are // defined in the base class. import java.lang.reflect.*; public class ShowMethods { static final String usage = "usage: \n" + "ShowMethods qualified.class.name\n" + "To show all methods in class or: \n" + "ShowMethods qualified.class.name word\n" + "To search for methods involving 'word'"; public static void main(String[] args) { if(args.length < 1) { System.out.println(usage); System.exit(0); } try { Class c = Class.forName(args[0]); Method[] m = c.getMethods(); Constructor[] ctor = c.getConstructors(); if(args.length == 1) { for (int i = 0; i < m.length; i++) System.out.println(m[i].toString()); for (int i = 0; i < ctor.length; i++) System.out.println(ctor[i].toString()); } else { for (int i = 0; i < m.length; i++) if(m[i].toString() .indexOf(args[1])!= -1) System.out.println(m[i].toString()); for (int i = 0; i < ctor.length; i++) if(ctor[i].toString() .indexOf(args[1])!= -1) System.out.println(ctor[i].toString()); } } catch (ClassNotFoundException e) { System.out.println("No such class: " + e); } } } ///:~