guiareaoutput.java

来自「《A first book of java》by Gary J.Bronson 」· Java 代码 · 共 20 行

import javax.swing.*;
public class GuiAreaOutput
{
  public static void main(String[] args)
  {
    double length, width, area;
    String output;
    length = 27.3;                           
    width = 13.4;
    area = length * width;
    output = "The length of the rectangle is " + length 
             + "\nThe width of the rectangle is " + width
             + "\nThe area of the rectangle is " + area;
    JOptionPane.showMessageDialog(null, output, "Program 3-2", 
                                  JOptionPane.INFORMATION_MESSAGE);
                                  
    System.exit(0); 
  }
}