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Java Source | 2000-05-25 | 3.7 KB | 90 lines |
- //: 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);
- }
- }
- } ///:~