byte String转换public class ChangeVar {public static void main(String[] args) {String str 123456
byte String 转换
public class ChangeVar {public static void main(String[] args) {String str = "123456789abcdefg";byte[] b = str.getBytes();//wrongString str_a = b.toString();System.out.println(str_a);//rightString str_b = new String(b);System.out.println(str_b);}}