AWT GUI Examples

Example : An AWT GUI program in Java to close the AWT window.

import java.awt.*;
import java.awt.event.*;

class CloseWindow
{
  public static void main(String[] args)
  {
    Frame fr = new Frame("AWT Window Close Operation");
    Label lbl = new Label("Welcome U All in Codershelpline",Label.CENTER);
    fr.add(lbl);
    fr.setSize(400,400);
    fr.setVisible(true);
    fr.addWindowListener(new WindowAdapter()
     {
       public void windowClosing(WindowEvent we)
         {
           System.exit(0);
         }
     });
  }
}

-----------  OR  -----------

import java.awt.*;
import java.awt.event.*;

class AWTFrame extends Frame
{
	Button b1;
	
     AWTFrame()
      {
	setTitle("How to Close an AWT Window");
	setSize(400,400);
	setLayout(new FlowLayout());
	setVisible(true); 
 
	b1=new Button("Submit");  //Optional Button Creation
	add(b1);
	
	addWindowListener(new WindowAdapter()
          {
		public void windowClosing(WindowEvent we)
		{
		 System.exit(0);
		}
	  });
       }

    public static void main(String args[])
     {
	new AWTFrame();
     }
}

Example : An AWT GUI program in Java to show the mouse click location(coordinates point) value from the frame.

import java.awt.*;
import java.awt.event.*;

class ClickLocation
{
	public static void main (String[] args)
	{
	   Frame frm = new Frame("Mouse Event Listener Program");
	   frm.setSize(500,500);   //Size of Frame.
	   frm.setVisible(true);   // To make Frame visible.
	   frm.addMouseListener(new MouseAdapter()
	      {
	         public void mouseClicked(MouseEvent e)
	          {
		    System.out.println("Mouse clicked at location : ("+e.getX()+","+e.getY()+")");
	          }
	       }
	    );
	   frm.addWindowListener(new WindowAdapter() 
	       {
                  public void windowClosing(WindowEvent we) 
		    {
                        System.exit(0);					
		    }
               });
	}	
}

Example : A simple AWT GUI program in Java to display a message on loading the frame.

import java.awt.*;

public class SimpleGUIExample 
{
    public static void main(String[] args) 
     {
        // Create a Frame (a window) with a title
        Frame frame = new Frame("Simple GUI Example");
        
        // Create a Label component
        Label label = new Label("Hello, World!");
        
        // Add the Label to the Frame
        frame.add(label);
        
        // Set the size of the Frame
        frame.setSize(300, 200);
        
        // Set the layout manager for the Frame
        frame.setLayout(new FlowLayout());
        
        // Make the Frame visible
        frame.setVisible(true);
    }
}

-----------  OR  -----------

import java.awt.*;

public class AWTExample 
 {
    public static void main(String[] args) 
     {
        // Create a frame
        Frame frame = new Frame("AWT Example");

        // Create a label for message
        Label label = new Label("Hello, World!");

        // Create a button
        Button button = new Button("Click Me to show message");

        // Create a panel
        Panel panel = new Panel();
        panel.add(label);
        panel.add(button);

        // Add the panel to the frame
        frame.add(panel);

        // Set the size of the frame
        frame.setSize(300, 200);

        // Make the frame visible
        frame.setVisible(true);
    }
}

Example : An AWT GUI program in Java to create a button & text field and display button event on the frame.

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

class ButtonEffect implements ActionListener 
{    
    Button btn;
    TextField tf;
    Frame fr;

    ButtonEffect(String s) 
      {
           fr = new Frame(s);
           btn = new Button("OK");

           tf = new TextField(12);
           fr.setSize(400, 350);
           fr.setVisible(true);
           btn.addActionListener(this);

           fr.add(tf);
           fr.add(btn);

           fr.addWindowListener(new WindowAdapter() 
	   {
             public void windowClosing(WindowEvent we) 
	      {
                System.exit(0);		
              }
           });

           fr.setLayout(new FlowLayout());
       }

    public void actionPerformed(ActionEvent e) 
	{
        if (e.getSource() == btn) 
	    {
            tf.setText("Ok button is Pressed");
            }
        }
    public static void main(String args[]) 
    {
        new ButtonEffect("Button Action Performed");
    }
}

-----------  OR  -----------

import java.awt.*;
import java.awt.event.*;

public class AWTExample 
{
    public static void main(String[] args) 
     {
        // Create a Frame (window) object with title
        Frame frame = new Frame("AWT Program Example");
        
        // Create a Label component
        Label label = new Label("AWT Label");
        
        // Create a Button component
        Button button = new Button("Click Me");
        
        // Add the Label and Button components to the created Frame
        frame.add(label);
        frame.add(button);
        
        // Set the FlowLayout manager for the Frame that arranges the components in a horizontal flow
        frame.setLayout(new FlowLayout());
        
        // Set a message for label after an event listener worked for the Button
        button.addActionListener(new ActionListener() 
         {
            public void actionPerformed(ActionEvent e) 
             {
                label.setText("Button clicked successfully");
             }
         });
        
        // Set the size and make the Frame visible
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}

NB: To handle button clicks, we add an ActionListener to the button using the addActionListener() method. When the button is clicked, the actionPerformed() method is invoked, and we update the label's text.

-----------  OR  -----------

import java.awt.Button;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class AWTExample 
 {
    public static void main(String[] args) 
     {
        // Create a frame (window) object with title message
        Frame frame = new Frame("AWT Simple Input Example");

        // Create a label
        Label label = new Label("Enter your name in the text box :");

        // Create a text field
        TextField textField = new TextField();

        // Create a button
        Button button = new Button("Submit");

        // Add an action listener to the button
        button.addActionListener(new ActionListener() 
          {
            public void actionPerformed(ActionEvent e) 
              {
                String name = textField.getText();
                System.out.println("YOu entered the name = " + name + ".");
              }
          });

        // Set the layout manager for the frame
        frame.setLayout(new FlowLayout());

        // Add the components to the frame
        frame.add(label);
        frame.add(textField);
        frame.add(button);

        // Set the size of the frame
        frame.setSize(300, 200);

        // Make the frame visible
        frame.setVisible(true);
    }
}