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JOptionPane Option Position Constants

Position Description CANCEL_OPTIONUsed when the Cancel button is pressed CLOSED_OPTIONUsed when the pop-up window closed without the user pressing a button NO_OPTIONUsed when the No button is pressed OK_OPTIONUsed when the OK button is pressed YES_OPTIONUsed when the Yes button is pressed import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; public class Test extends JFrame {   public Test() {     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     getContentPane().add(new JLabel("Placeholder label"));     pack();     setSize(200, 200);     setVisible(true);     int replaced = JOptionPane.showConfirmDialog(this,         "Replace existing selection?");     String result = "?";     switch (replaced) {     case JOptionPane.CANCEL_OPTION:       result = "Canceled";       break;     case JOptionPane.CLOSED_OPTION:       result = "Closed";       break;     case JOptionPane.NO_OPTION:       result = "No";       break;     case JOptionPane.YES_OPTION:       result = "Yes";       break;     default:       ;     }     System.out.println("Replace? " + result);   }   public static void main(String[] args) {     new Test();   } }