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