Thread: Need help int JTextField

ok i just created a text box with JTextField
here is the code:-

public class TextField1 extends JApplet implements ActionListener 
   {
    JTextField Input;
    JTextField Echo;
 
    LayoutManager Layout;
    public TextField1 () {
    Panel.setSize(700,400);
 
    Echo = new JTextField ("", 20);
    Input = new JTextField ("", 20);
    Layout = new FlowLayout ();
 
    Echo.setEditable (false);
    Input.setBackground (Color.white);
    Input.addActionListener (this);
    Panel.setLayout (Layout);
    Panel.add (Echo);
    Panel.add (Input);
 
    Panel.setVisible(true);
    }
    public void actionPerformed (ActionEvent e) {
     Echo.setText (Input.getText());
     Input.setText("");
    }
   }

this is sub-class of the main class and Panel is JFrame
i need help in changing the length of Echo(not the bredth).
Plz Help
Regards.

woot if i finaly understood you ^.^ think i need to have abit of a sleep now lol.


Limiting the amount of characters that can be put in a textfield before you cannot type anymore:

import java.awt.FlowLayout;
 
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;
 
class JTextFieldLimit extends PlainDocument {
  private int limit;
  JTextFieldLimit(int limit) {
    super();
    this.limit = limit;
  }
 
  JTextFieldLimit(int limit, boolean upper) {
    super();
    this.limit = limit;
  }
 
  public void insertString(int offset, String str, AttributeSet attr) throws BadLocationException {
    if (str == null)
      return;
 
    if ((getLength() + str.length()) <= limit) {
      super.insertString(offset, str, attr);
    }
  }
}
 
public class Main extends JFrame {
  JTextField textfield1;
 
  JLabel label1;
 
  public void init() {
    setLayout(new FlowLayout());
    label1 = new JLabel("max 10 chars");
    textfield1 = new JTextField(15);
    add(label1);
    add(textfield1);
    textfield1.setDocument(new JTextFieldLimit(10));
 
    setSize(300,300);
    setVisible(true);
  }
}

Congratulations you now know everything about a JTextField lol..