命令行参数

 1 package first;
 2 
 3 public class TestArgs {
 4 
 5     public static void main(String[] args) {
 6         if (args.length != 2) {
 7             System.out.println("Error!");
 8             System.out.println("Length=" + args.length + "they are:");
 9             for (String s : args)
10                 System.out.println(s);
11         } else {
12             for (String s : args)
13                 System.out.println(s);
14         }
15 
16     }
17 
18 }