Java-Short类型不溢出的问题

Question

求教各位以下程序

 public static void main(String args[])
 {
 short ShortMax = Short.MAX_VALUE;
 short a =1;
 System.out.println("Maximum of Short Is = "+ ShortMax+a);
}

输出结果是327671

public static void main(String args[])
 {
 short ShortMax = Short.MAX_VALUE;
 short a =1;
 System.out.println(ShortMax+a);
}

输出结果是32768

想问下以上两例为什么不会出现溢出？

Answer 1

ShortMax+a
会自动转换成int
(short)(ShortMax+a)