git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1246 379699f6-c40d-0410-875b-85095c16579emaster
hoenicke
25 years ago
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<!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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|
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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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|
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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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|
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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> This |
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package may change in the future in incompatible ways. Ask me for |
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more information. <br><br> |
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|
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<b>BIG FAT WARNING:</b> Some of the things documented here aren't even |
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implemented. Some of this is only vapor ware. But feel free to |
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comment on this and point me to design errors!<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(Modifiers.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: Mon Jun 26 09:46:24 MET DST 2000 |
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<!-- hhmts end --> |
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</body> |
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</html> |
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