Java Queries

Java Queries

How to use setBounds() method in Java GUI application??

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July 24, 2012 at 10:51 AM

The setBounds() method sets the position of swing components on the container i.e. on JFrame. Here is a simple login form code that sets the textfields, button and labels on the frame using setBounds() method.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

class LoginDemo extends JFrame{
 JButton SUBMIT;
 JLabel label1,label2,lab;
 final JTextField  text1,text2;
  LoginDemo(){

    setTitle("Login Form");
    setLayout(null);
    label1 = new JLabel();
    label1.setText("Username:");
    text1 = new JTextField(15);

    label2 = new JLabel();
    label2.setText("Password:");
    text2 = new JPasswordField(15);

    SUBMIT=new JButton("SUBMIT");
    label1.setBounds(350,100,100,20);
    text1.setBounds(450,100,200,20);
    label2.setBounds(350,130,100,20);
    text2.setBounds(450,130,200,20);
    SUBMIT.setBounds(450,160,100,20);
    add(label1);
    add(text1);
    add(label2);
    add(text2);
    add(SUBMIT);

   setVisible(true);
   setSize(1024,768);

 SUBMIT.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent ae){
    String value1=text1.getText();
    String value2=text2.getText();

      JOptionPane.showMessageDialog(null,"Hello "+value1);
  }
 });
  }

  public static void main(String arg[]){
  new LoginDemo();
}
}

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