NAME
javap - Java class file disassembler
SYNOPSIS
javap [ -b ] [ -c ] [ -classpathpath ] [ -h ] [ -J flag ]
[ -l ] [ -package ] [ -private ] [ -protected ]
[ -public ] [ -s ] [ -verbose ] [ -verify ]
[ -version ] class . . .
DESCRIPTION
The javap command disassembles a Java class file. The
options determine the output. If no options are used, javap
displays the public fields and methods of the classes passed
to it. The javap command displays its output to stdout.
For example, compile 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.
-c Prints out disassembled code, that is, the
instructions that comprise the Java
bytecodes, for each of the methods in the
class.
-classpathpath 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
-h Generates code that can be placed to a C
header file.
-J flag Passes flag directly to runtime system.
-l Displays line and local variable tables.
-package Default; shows only package, protected, and
public classes and members.
-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.
-verify Runs the verifier.
-version Prints out the javap version string.
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
ATTRIBUTES
See attributes(5) for a description of the following attri-
butes:
__________________________________
| ATTRIBUTE TYPE| ATTRIBUTE VALUE|
|_______________|__________________|_
| Availability | SUNWjvdev |
|_______________|_________________|
SEE ALSO
java(1), javac(1), javadoc(1), javah(1), jdb(1), attri-
butes(5)
|
Закладки на сайте Проследить за страницей |
Created 1996-2025 by Maxim Chirkov Добавить, Поддержать, Вебмастеру |