📄 firstswingdemo.java
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package swing;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class FirstSwingDemo {
/**
* @param args
*/
public static void main(String[] args) {
JFrame jf = new JFrame("first");
jf.setSize(200,100);
JButton mybutton = new JButton("hello");
jf.getContentPane().add(mybutton,BorderLayout.WEST);
jf.getContentPane().setBackground(Color.blue);
jf.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
jf.setVisible(true);
}
}
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