reset the text area contents

Question

I have this code.. here when i input number "6" in the textfield, text should be displayed in the textarea..but after that if i input any other number i want the textarea contents to be clear. But when I execute my code, the old contents of the textarea remain even when i input a different number. Please help!

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/* <applet code="front" width=500 height=500></applet> */
public class front extends Applet implements ActionListener {
  String msg="";
  TextArea text,text1;
  TextField txt;
  Button load, enter;

  public void init() {
    enter=new Button("Enter");
    load=new Button("Load");
    txt=new TextField(5);
    text=new TextArea(10,15);

    add(load);
    add(text);

    add(txt);
    add(enter);

    load.addActionListener(this);
    txt.addActionListener(this);
    enter.addActionListener(this);
  }

  public void actionPerformed(ActionEvent ae)
  {
    String str = ae.getActionCommand();
    if(str.equals("Load")) {
      msg = "You pressed Load";
    } else {
      if(txt.getText().toString().equals ("6")) {
        msg="Set the text for 6";
        text.setText("Text");
      } else {
        msg="Invalid number";
        text.setText("");
      }
    }
    repaint();
  }

  public void paint(Graphics g) {
    g.drawString(msg,350,250);
  }
}

Solution

write your actionPerformed() method as follows

    public void actionPerformed(ActionEvent ae)
  {
    String str = ae.getActionCommand();
    if(str.equals("Load")) {
      msg = "You pressed Load";
    } else {
      if(txt.getText().toString().equals ("6")) 
         {
        **text.setText("");**
        msg="Set the text for 6";
        text.setText("Text");
         } 
         else {
        msg="Invalid number";
        text.setText("");
      }
    }
    repaint();
  }

the mistake was that you were not clearing the text field after writing to it! now it is cleared by using text.setText(""); in if condition

hope this solves your problem!

Comments

[praveena]

No it doesnt :( it remains as "Text" itself..the thing is only the msg "Invalid msg" gets displayed but the textfield isnt cleared :(