javap(1)						      General Commands Manual							  javap(1)

NAME

       javap - Java class file disassembler

SYNOPSIS

       javap [ options ] class ...

DESCRIPTION

       The javap command disassembles a Java class file.  The options determine the output.  If no options are used, javap prints out the package,
       protected, and public fields and methods of the classes passed to it.  The javap command displays its output to stdout.	For example,  com-
       pile the following class declaration:
	      import java.awt.*;
	      import java.applet.*;

	      public class DocFooter extends Applet {
			String date;
			String email;

			public void init() {
			     resize(500,100);

			     date = getParameter("LAST_UPDATED");
			     email = getParameter("EMAIL");
			}

			public void paint(Graphics g) {
			     g.drawString(date + " by ",100, 15);
			     g.drawString(email,290,15);
			}
	      }

       The output from javap DocFooter yields:

	      Compiled from DocFooter.java
	      public class DocFooter extends java.applet.Applet {
		   java.lang.String date;
		   java.lang.String email;
		   public void init();
		   public void paint(java.awt.Graphics);
		   public DocFooter();
	      }

OPTIONS

       The following options are supported:

       -b	      Ensures backward compatibility with javap in JDK 1.1.

       -bootclasspath path
		      Specifies  path  from  which  to load bootstrap classes.	By default, the bootstrap classes are the classes implementing the
		      core Java platform located in jre/lib/rt.jar and jre/lib/charsets.jar.

       -c	      Prints out disassembled code, that is, the instructions that comprise the Java bytecodes, for each of  the  methods  in  the
		      class.  These are documented in the Java Virtual Machine Specification.

       -classpath path
		      Specifies the path javap uses to look up classes.  Overrides the default or the CLASSPATH environment variable if it is set.
		      Directories are separated by colons (:).	Thus the general format for path is:

			   .:<your_path>

		      For example:

			   .:/home/avh/classes:/usr/local/java/classes

       -extdirs dirs  Overrides location at which installed extensions are searched.  The default location for extensions is jre/lib/ext.

       -help	      Prints out help message for javap.

       -Jflag	      Passes flag directly to runtime system.

		      javap -J-version

		      javap -JJ-Djava.security.manager
		      -Djava.security.policy=MyPolicy MyClassName

       -l	      Displays line and local variable tables.

       -package       Shows only package, protected, and public classes and members. This is the default.

       -private       Shows all classes and members.

       -protected     Shows only protected and public classes and members.

       -public	      Shows only public classes and members.

       -s	      Displays internal type signatures.

       -verbose       Prints stack size, number of locals, and args for methods.

ENVIRONMENT VARIABLES

       CLASSPATH      Used to provide the system with a path to user-defined classes. Directories are separated by colons.  For example:

		 .:/home/avh/classes:/usr/local/java/classes

SEE ALSO

       java(1), javac(1), javadoc(1), javah(1), jdb(1)

								   13 June 2000 							  javap(1)