java语言中的varargs

 1     private void test1(int... args) {
 2         if (args != null) {
 3             System.out.println("[test1] args.length = " + args.length);
 4         } else {
 5             System.out.println("[test1] args is null");
 6         }
 7     }
 8 
 9     private void test2(String... args) {
10         if (args != null) {
11             System.out.println("[test2] args.length = " + args.length);
12         } else {
13             System.out.println("[test2] args is null");
14         }
15     }
16 
17     public void static main(String[] args) {
18         test1();
19         test1(null);
20         test1(1);
21         test1(1,2);
22 
23         test2();
24         test2(null);
25         test2("1");
26         test2("a", "b");
27     }