Provides easy access to class files and their contents. To use it you
create a ClassPath
object giving it the locations where
it should search for classes. Then you can ask this object for a
class and get a ClassInfo object. As third step you can actually load
the class.
Please notify me if you want to use this package. I will inform you
about updates, help you with problems, etc. WARNING: Some
parts of this package may change in the future in incompatible ways.
Ask me for more information.
Here is a short example, how you can use this package, see the
documentation of the classes for more details.
...
ClassPath path = new ClassPath("/usr/lib/java/lib/classes.zip");
ClassInfo clazz = path.getClassInfo("java.util.Hashtable");
try {
clazz.load(ClassInfo.DECLARATIONS);
} catch (ClassFormatException ex) {
System.err.println("Something is wrong with HashTable, giving up!");
return;
} catch (IOException ex) {
System.err.println("Can't load HashTable, giving up!");
return;
}
MethodInfo[] methods = clazz.getMethods();
for (int i = 0; i < methods.length; i++) {
String type = methods[i].getType();
if (TypeSignature.getReturnType(type) == TypeSignature.INT_TYPE)
System.out.println("Found integer method: "+method.getName());
}
...
You can also use this package to create and write new classes:
...
ClassPath path = new ClassPath("/usr/lib/java/lib/classes.zip");
ClassInfo clazz = path.getClassInfo("my.new.Class");
clazz.setModifiers(Modifier.PUBLIC);
clazz.setSourceFile("Class.pl");
clazz.set...
clazz.write(zipOutputStream);
...
Jochen Hoenicke
Last modified: Sun Aug 5 17:53:03 MEST 2001