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Use Boxes Message with JOptionPane class

Common Constructors of JOptionPane class :

Common Methods of JOptionPane class :

Example :

 import javax.swing.JOptionPane;
  public class NumbersDialog {
   public static void main(String[] args) {
     int creditDays = 30;


     JOptionPane.showMessageDialog(null, "" + creditDays);
     JOptionPane.showMessageDialog(null, "Every bill is due in " +       creditDays + " days");

     }
}


NumbersDialog class :

First dialog box created by NumbersDialog application :




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