multilinedialog.java

《A first book of java》by Gary J.Bronson 北大出版社

// File: MultiLineDialog.java
// Description: Construction of a dialog
// Programmer: G. Bronson
// Date: 6/15/01
import javax.swing.*; 
public class MultiLineDialog
{
  public static void main (String[] args) 
  {
    JOptionPane.showMessageDialog(null,
           "Computers everywhere\n as far as\n\nI can see",
           "Sample", JOptionPane.WARNING_MESSAGE);
    System.exit(0);
 }
}