多选题Use the operators ""， which statements are true？ （）A0000 0100 0000 0000 0000 0000 0000 00005 gives 1000 0000 0000 0000 0000 0000 0000 0000B0000 0100 0000 0000 0000 0000 0000 00005 gives 1111 1100 0000 0000 0000 0000 0000 0000C1100 0000 0000 0000 0000 0000 0000 00005 gives 1111 1110 0000 0000 0000 0000 0000 0000D1100 0000 0000 0000 0000 0000 0000 00005 gives 0000 0110 0000 0000 0000 0000 0000 0000
多选题
Use the operators ">"， which statements are true？ （）
A
0000 0100 0000 0000 0000 0000 0000 0000<<5 gives 1000 0000 0000 0000 0000 0000 0000 0000
B
0000 0100 0000 0000 0000 0000 0000 0000<<5 gives 1111 1100 0000 0000 0000 0000 0000 0000
C
1100 0000 0000 0000 0000 0000 0000 0000>>5 gives 1111 1110 0000 0000 0000 0000 0000 0000
D
1100 0000 0000 0000 0000 0000 0000 0000>>5 gives 0000 0110 0000 0000 0000 0000 0000 0000
参考解析
解析：
Java的移位操作符一共有三种，分别是”>>”,”>>>”,”<<”,执行的操作分别是有符号右移，无符号右移，左移，有符号右移的意思是说移入的最高位和原最高符号位相同，无符号右移是移入位始终补零，左移时最低位始终补零，最高位被舍弃。移位操作符另一个非常值得注意的特点是其右操作数是取模运算的，意思是说对于一个int型数据而言，对它移位32位的结果是保持不变而非变成零，即：a>>32的结果是a而不是0，同理，对long型数是对右操作数取64的模，a>>64==a；还有一点需要注意的是移位操作符”>>>”只对int型和long型有效，对byte或者short的操作将导致自动类型转换，而且是带符号的。
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