只要没有给String[]数组new 空间，那么他就只是一个引用

 1 public class Test1 {
 2     @Test
 3     public void test(){
 4         String[] values = {"good", "morning", "!"};
 5         String[] values2 = values;
 6         values[1] = "night";
 7             
 8         for(String value : values){
 9             System.out.print(value + " ");
10         }
11         System.out.println();
12         for(String value : values2){
13             System.out.print(value + " ");
14         }
15     }
16 }