Writing a Toolbar with Java

This Java example shows how to program a Toolbar by the use of a string array and an index for the buttons. It shows how to respond to click events.

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JFrame;

public class mButton {


  String[] Kommandos = {"xterm" ,"gedit" ,"xclock"};       //Define some buttons
  JButton Jb[] = new JButton[Kommandos.length];


public mButton() {
   
    JFrame myframe = new JFrame("Buttons");   
    myframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    myframe.setLayout(new FlowLayout());   
    Font font = new Font("Dialog", Font.PLAIN, 30);
  
   
    for (int index=0; index < Kommandos.length; index++)
   
    {
    //System.out.println("index: " + index );
    Jb[index] = new JButton(Kommandos[index]);
    Jb[index].setFont(font);
    myframe.add(Jb[index]);
   
   
    Jb[index].addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ev) {
                JButton theButton = (JButton) ev.getSource();
                String text = theButton.getText();
               
                //String num = theButton.getActionCommand();     
                //System.out.println(num);
                //System.out.println(text);

               try {
                Runtime.getRuntime().exec(text);        
                } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                }          
            }                  
    });
      
    myframe.pack();
    myframe.setLocationRelativeTo(myframe);    //center on screen
    myframe.setVisible(true);
    myframe.setResizable(false);
   
  }
}

public static void main(String[] args) {
    mButton myKommands = new mButton();
  }
 

}