How to run a program from GUI?

What type of program? A jar? A classfile?

The easy way would be to add the jar to your classpath, then just call its main class.

If it's just a class file, drag it to your working directory, and call it that way.

so lets say your program is called Mario.java, and the program you want to run is "Davey.jar" which is in the same folder...

Compile:

c:\> javac -cp .;Davey.jar Mario.java

Run:

c:\> java -cp .;Davey.jar Mario

Code:

import com.code.Davey; // You need to know what the main class is called

public class Mario() {

// Run Davey.jar

Davey j = new Davey();

j.setVisible(true);

}

In the event you want to do it dynamically, its gets tricky, but its possible, just ask.

-FBL

FBLa at 2007-7-12 8:33:14 >

I've got JDK1.6 and I searched more about java.awt.Desktop

but I still don't know how to do it....

public void actionPerformed ( ActionEvent e){

String command = e. getActionCommand ();

if ( command.equals("Open"))

//what command shall I write here so that I can open a program?

fde_cpua at 2007-7-12 8:33:14 >

well it doesn't work.I've wrote

Desktop.getDesktop().open(File Java1.class); and it gives me this errors

Program.java:57: ')' expected

Desktop.getDesktop().open(File Java1.class);

^

Program.java:57: not a statement

Desktop.getDesktop().open(File Java1.class);

^

Program.java:57: ';' expected

Desktop.getDesktop().open(File Java1.class);

^

fde_cpua at 2007-7-12 8:33:14 >

import java.awt.*;

import java.awt.event.*;

import java.awt.Desktop;

import java.io.File;

public class Program extends Frame implements ActionListener{

public Program (String titlu){

super(titlu);

this.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

setSize(400,400);

setBackground(Color.lightGray);

Label acces=new Label("Introduceti numele si parola!");

acces.setText("");

add(acces);

Panel adaugare=new Panel();

Button adauga=new Button("Adauga un element");

adaugare.add(adauga);//adaugam panel pe suprafata ferestrei

adauga.setForeground(Color.red);//stabilim culoarea pentru panel

add(adaugare,BorderLayout.NORTH);//adaugam panel pe suprafata ferestrei

Button b1=new Button("Java1");

add(b1,BorderLayout.WEST);

Button b2=new Button("Java2");

add(b2,BorderLayout.EAST);

Button b3=new Button("Exit");

add(b3,BorderLayout.SOUTH);

MenuBar mb=new MenuBar();

Menu fisier=new Menu("File");

fisier.add(new MenuItem("Exit"));

mb.add(fisier);

setMenuBar(mb);

fisier.addActionListener(this);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

adauga.addActionListener(this);

}

public void actionPerformed ( ActionEvent e){

String command = e. getActionCommand ();

if ( command.equals("Java1"))//the errorDesktop.getDesktop().open(new File("c:\\test.txt"));

}

// Valabila si pentru meniu si pentru buton

public static void main(String args[]){

//throws IOException{

//Runtime rt = Runtime.getRuntime();

Program f=new Program("Atestat");

f.show();f.setResizable(false);

}

}

fde_cpua at 2007-7-12 8:33:14 >