Questions about the mutual assignment between Byte,short,char,int in Java

First, the range of values for these data classes is clarified:

BYTE: -128~127

Short: -2^15~2^15-1

char:0~65536

int: -2^31~2^31-1

Take a look at the following code:

byte B = 100;

Short S = b; Correct, because the value range of byte is within the short value range.

char C = b; Error because the value range of byte is not exactly within the value range of char.

c = S; Error because the value range of short is not exactly within the value range of char.

int x = b; Correct, because the value range of byte is within the value range of int.

x = S; Correct, because the value range of short is within the value range of int.

x = C; Correct, because the value range of char is within the value range of int.

This article is from the Java Technology Alliance blog, so be sure to keep this source http://simoniu.blog.51cto.com/2566344/1590164

Questions about the mutual assignment between Byte,short,char,int in Java