byte类型的两个数相加是怎么得出-100的

Question

package com.PAPA;

public class Rule {
public static void main(String[] args){
byte b1=67;
byte b2=89;
byte b3=(byte)(b1+b2);
System.out.println(b3);
}

}//运行结果是-100

Answer 1

http://blog.csdn.net/scauscnu/article/details/6198921