Invoke Java desktop application methods.

This guide shows how to create a Java desktop application and how to call its Java procedures or methods from PHP scripts.

Create and test your Java desktop application.

1. Create a simple application, HelloWorld.java, which just displays a "hello world" dialog box:
   
import javax.swing.JOptionPane;


public class HelloWorld {
  public static void main(String args[]) throws Exception {
    JOptionPane.showMessageDialog(null, "hello world");
    System.exit(0);
  }
  public void hello(String args[]) throws Exception {
    JOptionPane.showMessageDialog(null, "hello " + args[0]);
  }
}

Create a manifest file, MANIFEST.MF, with the following content:
   
   Main-Class: HelloWorld


   
2. Compile and run your Java application. Open a command shell and type:
   
javac -Djava.ext.dirs=. HelloWorld.java
jar cvmf MANIFEST.MF HelloWorld.jar HelloWorld*.class
java -jar HelloWorld.jar


Add the PHP/Java Bridge library to your Java application

1. Copy JavaBridge.jar to the current directory.
   
   
2. Add JavaBridge.jar to your Java application. Edit the manifest MANIFEST.MF like this:
   
Main-Class: HelloWorld
Class-Path: JavaBridge.jar

   
3. Open a communication port for PHP. Edit HelloWorld.java like this:
   
import javax.swing.JOptionPane;

public class HelloWorld {
  public static final String JAVABRIDGE_PORT="8087";
  static final php.java.bridge.JavaBridgeRunner runner =
    php.java.bridge.JavaBridgeRunner.getInstance(JAVABRIDGE_PORT);

  public static void main(String args[]) throws Exception {
    runner.waitFor();
    System.exit(0);
  }
  public void hello(String args[]) throws Exception {
    JOptionPane.showMessageDialog(null, "hello " + args[0]);
  }
}


4. Recompile your Java application.
   
   
5. Run your Java application. This time your application doesn't display anything and doesn't return.
   
   
6. Create a PHP test script. For example:
   
<?php require_once("http://localhost:8087/JavaBridge/java/Java.inc");

$world = new java("HelloWorld");
echo $world->hello(array("from PHP"));
?>

   
7. Open a new command shell and run your test script. For example with:

   php -n -dallow_url_include=On test.php


8. Your PHP script has called the method hello(), which should display a message dialog.
9. Note that the above code doesn't create a application-modal dialog. The communication can be traced by starting your application with the options: java -Dphp.java.bridge.default_log_file= -Dphp.java.bridge.default_log_level=4 -jar HelloWorld.jar

For further information please read the INSTALL.STANDALONE documentation from the documentation download file.