char[] to string

Question

String(char[] value) 
          Allocates a new String so that it represents the sequence of characters currently contained in the character array argument.

Answer 1

char c[] = {1,2};
String s = new String(c);

Answer 2

String to char[] use:
                String.toCharArray()
char[] to String use:
                new String(char[])请问你是用什么类的toString方法转换的？