1  /*
 2       String 与 char[]之间的转换
 3 
 4       String----> char[]:调用String的toCharArray()
 5       char[] ---->String:调用String的构造器
 6        */
 7     @Test
 8     public void test6(){
 9         String str1 = "abc123";
10 
11         char[] charArray = str1.toCharArray();
12         for(int i =0;i <charArray.length;i++){
13             System.out.println(charArray[i]);  //a  b   c  1  2 3
14         }
15 
16         char[] arr = new char[]{'h','e','l','l','o'};
17         String str2 = new String(arr);
18         System.out.println(str2);  //hello
19 
20     }