import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class MyFrameSample extends JFrame implements ActionListener
{
JButton btn;
JTextField[] txt;
MyFrameSample()
{
txt=new JTextField[3];//initializing array of text fields
btn=new JButton("Click Me");//initializing button
txt[0]=new JTextField("Enter a");//it will be used to take number as input
txt[1]=new JTextField("Enter b");
txt[2]=new JTextField("a+b = ");//result will be set here
btn.addActionListener(this);//it register action listener with button and this(out frame) will
// handle action event
add(txt[0]);
add(txt[1]);
add(txt[2]);
add(btn);
}
public void actionPerformed(ActionEvent e)//on button click this will be called
{
int a=Integer.parseInt(txt[0].getText());//converting string into integer
int b=Integer.parseInt(txt[1].getText());
int c=a+b;
txt[2].setText(""+c);
}
}
class FrameDemoSample
{
public static void main(String args[])
{
MyFrameSample x=new MyFrameSample();
x.setLayout(new FlowLayout());//setting layout
x.setSize(300,400);//setting size
x.setTitle("My Frame Sample");//title
x.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//cross button working
x.setVisible(true);//frame will be visible now
}
}
#JAVA #awt #swing #events #frames #jframe #java
