examples.io
Class HelloWorld

java.lang.Object
  |
  +--examples.io.HelloWorld

public class HelloWorld

extends java.lang.Object

This example illustrates the use of WebLogic File Services. HelloWorld looks for a file on the server, writes "Hello World" to the file if it is NOT there, reads the first 11 bytes of the file, and displays them.

The following sections cover what to do:

1. Build the Example
2. Configure the Server
3. Run the Example

Build the Example

1. Set up your development shell, as described in Setting up your environment for building and running the examples.

2. Compile the example by executing the following command or by executing the build script provided for this example in the samples\examples\io directory. The script will perform the following step:
   1. Compile the HelloWorld class as shown in this example for Windows NT/2000:

        prompt> javac -d %CLIENT_CLASSES% HelloWorld.java

Configure the Server

1. Start the server with the examples configuration in a new command shell.
2. Bring up the Administration Console in your browser.
3. Click to expand the Services node in the left-hand pane.
4. Select the FileT3 node in the left-hand pane.
5. Click on Register a new File T3 link in the right-hand pane to display Configuration, Targets and Notes tab.
6. Select the Configuration tab in the right-hand pane to display the Name and Path field.
7. Register a fileSystem that the WebLogic Server maps to a real path that is valid on the server host. For example, to map the fileSystem "mySys" to "c:\temp" :

    Name: mySys

    Path: c:\\temp

8. Click the Create button to save the assignment.
9. Select the Targets tab in the right-hand pane to display the Available and Chosen targets.
10. Move the examplesServer from the Target column to the Chosen column.
11. Click the Apply button to save the assignment.

Run the Example

1. In your development shell, run "HelloWorld" using the registered file system "mySys":

     prompt> java examples.io.HelloWorld t3://hostname:port mySys myfile

   where:

   hostname

   Host name of the WebLogic Server.

   port

   Port where the WebLogic Server is listening for connections.

   myfile

   Name of a target file to write to and read from.

   Example:

   prompt> java examples.io.HelloWorld t3://localhost:7001 mySys myfile

   Getting the file system mySys

   Getting the file myfile

   Writing to the file

   Reading from the file

   File contents: Hello World

2. In your development shell, run "HelloWorld" using the local file system:

     prompt> java examples.io.HelloWorld t3://hostname:port myfile

   When a registered file system name is not specified, the local file system is used. File names are always absolute on a remote file system, but may be relative on a local file system.

Author:

Copyright (c) 1999-2002 by BEA Systems, Inc. All Rights Reserved.

Constructor Summary

HelloWorld()

Method Summary

static void

main(java.lang.String[] argv) Runs the HelloWorld file example.

Methods inherited from class java.lang.Object

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

Constructor Detail

HelloWorld

public HelloWorld()

Method Detail

main

public static void main(java.lang.String[] argv)

Runs the HelloWorld file example.