Java Programing laungage

/*
 * Save as a addTextBox.java
 */
package r4r.Mobile.Basic;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
		/**
 * @author R4R
 */
public class addTextBox extends MIDlet {
 
 /* -- Private Field -- */
 private Display display;
 private TextBox inputBox;
 private Command exit;
 /* -- Default constructor -- */
 public addTextBox() {
 display= Display.getDisplay(this);
 inputBox= new TextBox("Write something into TextBox", "", 40, 0);
 exit = new Command("EXIT", Command.EXIT, 1);
 
 // add field into form
 inputBox.addCommand(exit);
 }
 public void startApp() {
 inputBox.setCommandListener(new CommandListener() {
 public void commandAction(Command c, Displayable d) {
 if (c== exit) {
 destroyApp(true);
 notifyDestroyed();
 }
 }
 });
 display.setCurrent(inputBox);
 }
 
 public void pauseApp() {
 }
 
 public void destroyApp(boolean unconditional) {
 }
}