javassist.tools.web

Class Viewer

java.lang.Object

java.lang.ClassLoader

javassist.tools.web.Viewer

public class Viewer
extends java.lang.ClassLoader

A sample applet viewer.

This is a sort of applet viewer that can run any program even if the main class is not a subclass of Applet. This viewwer first calls main() in the main class.

To run, you should type:

% java javassist.tools.web.Viewer host port Main arg1, ...

This command calls Main.main() with arg1,... All classes including Main are fetched from a server http://host:port. Only the class file for Viewer must exist on a local file system at the client side; even other javassist.* classes are not needed at the client side. Viewer uses only Java core API classes.

Note: since a Viewer object is a class loader, a program loaded by this object can call a method in Viewer. For example, you can write something like this:

 Viewer v = (Viewer)this.getClass().getClassLoader();
 String port = v.getPort();
 

Constructor Summary

Constructors

Constructor and Description
Viewer(java.lang.String host, int p) Constructs a viewer.

Method Summary

Modifier and Type	Method and Description
int	getPort() Returns the port number.
java.lang.String	getServer() Returns the server name.
static void	main(java.lang.String[] args) Starts a program.
void	run(java.lang.String classname, java.lang.String[] args) Invokes main() in the class specified by classname.

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus

Methods inherited from class java.lang.Object

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

Constructor Detail

Viewer

public Viewer(java.lang.String host,
              int p)

Constructs a viewer.

Parameters:

host - server name

p - port number

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.lang.Throwable

Starts a program.

Throws:

java.lang.Throwable

getServer

public java.lang.String getServer()

Returns the server name.

getPort

public int getPort()

Returns the port number.

run

public void run(java.lang.String classname,
                java.lang.String[] args)
         throws java.lang.Throwable

Invokes main() in the class specified by classname.

Parameters:

classname - executed class

args - the arguments passed to main().

Throws:

java.lang.Throwable