Package gnu.bytecode

Class dump

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

gnu.bytecode.ClassFileInput

gnu.bytecode.dump

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable

public class dump
extends ClassFileInput

Application to read a ClassType from a DataInputStream (.class file). To print out the contents of a class file foo.class, you can use the class dump as an application:

 java gnu.bytecode.dump foo.class
 

This will print out the constant pool, fields, methods, superclass, and implemented interfaces of class foo. It is useful for printing out more detailed information than javap does.

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Reads a .class file, and prints out the contents to System.out.
static void	process(InputStream in, String filename, ClassTypeWriter out)
static void	process(InputStream in, String filename, OutputStream out, int flags)
static void	process(InputStream in, String filename, Writer out, int flags)
Attribute	readAttribute(String name, int length, AttrContainer container)
ConstantPool	readConstants()
static void	usage(PrintStream err)

Methods inherited from class gnu.bytecode.ClassFileInput

readAttributes, readClassInfo, readClassType, readFields, readFormatVersion, readHeader, readMethods, skipAttribute

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

readConstants

public ConstantPool readConstants()
                           throws IOException

Overrides:

readConstants in class ClassFileInput

Throws:

IOException

readAttribute

public Attribute readAttribute(String name,
                               int length,
                               AttrContainer container)
                        throws IOException

Overrides:

readAttribute in class ClassFileInput

Throws:

IOException

process

public static void process(InputStream in,
                           String filename,
                           OutputStream out,
                           int flags)
                    throws IOException

Throws:

IOException

process

public static void process(InputStream in,
                           String filename,
                           Writer out,
                           int flags)
                    throws IOException

Throws:

IOException

process

public static void process(InputStream in,
                           String filename,
                           ClassTypeWriter out)
                    throws IOException

Throws:

IOException

main

public static void main(String[] args)

Reads a .class file, and prints out the contents to System.out. Very rudimentary - prints out the constant pool, and field and method names and types, but only minimal attributes (i.e. no dis-assembly yet).

Parameters:

args - One argument - the name of a .class file.

usage

public static void usage(PrintStream err)