How to display a picture 1
nimport java.awt.*;
nimport java.awt.image.*;
nimport java.util.*;
nclass JPEGshow extends Frame {
n    ...
n    static public void main(String[] args) {
n        if (args.length == 1) new JPEGshow(args[0]);
n        else System.err.println("usage: java JPEGshow <image file>");
n    }
n}
nThis is a standard Java Program class with a public static void main method
See next slide for this