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81 lines
2.7 KiB
81 lines
2.7 KiB
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<!--
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Copyright (C) 1998-1999 Jochen Hoenicke.
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This documentation is free; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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-->
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<title>JODE Bytecode Package</title>
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</head>
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<body>
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Provides easy access to class files and their contents. To use it you
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create a <code>ClassPath</code> object giving it the locations where
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it should search for classes. Then you can ask this object for a
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class and get a ClassInfo object. As third step you can actually load
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the class.<br><br>
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Please notify me if you want to use this package. I will inform you
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about updates, help you with problems, etc. <b> WARNING: </b> Some
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parts of this package may change in the future in incompatible ways.
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Ask me for more information. <br><br>
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Here is a short example, how you can use this package, see the
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documentation of the classes for more details.
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<pre>
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...
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ClassPath path = new ClassPath("/usr/lib/java/lib/classes.zip");
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ClassInfo clazz = path.getClassInfo("java.util.Hashtable");
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try {
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clazz.load(ClassInfo.DECLARATIONS);
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} catch (ClassFormatException ex) {
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System.err.println("Something is wrong with HashTable, giving up!");
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return;
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} catch (IOException ex) {
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System.err.println("Can't load HashTable, giving up!");
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return;
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}
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MethodInfo[] methods = clazz.getMethods();
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for (int i = 0; i < methods.length; i++) {
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String type = methods[i].getType();
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if (TypeSignature.getReturnType(type) == TypeSignature.INT_TYPE)
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System.out.println("Found integer method: "+method.getName());
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}
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...
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</pre>
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You can also use this package to create and write new classes:
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<pre>
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...
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ClassPath path = new ClassPath("/usr/lib/java/lib/classes.zip");
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ClassInfo clazz = path.getClassInfo("my.new.Class");
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clazz.setModifiers(Modifier.PUBLIC);
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clazz.setSourceFile("Class.pl");
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clazz.set...
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clazz.write(zipOutputStream);
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...
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</pre>
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<hr>
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<address><a href="mailto:jochen@gnu.org">Jochen Hoenicke</a></address>
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<!-- Created: Thu Jun 22 16:56:39 MET DST 2000 -->
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<!-- hhmts start -->
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Last modified: Sun Aug 5 17:53:03 MEST 2001
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<!-- hhmts end -->
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</body>
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</html>
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