r_shift.java

来自「JAVA程序设计课程中各章节的程序实例。」· Java 代码 · 共 18 行

//Right shift
class R_shift
{
	public static void main(String args[])
	{
		char hex[] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
		byte b = (byte)0xf,
		     c = (byte)(b >> 4),
		     d = (byte)(b >>> 4);
		    // e = (byte)(b & 0xff) >> 4

        System.out.println(b);
        System.out.println(b>>4);
        System.out.println(d);
		System.out.println("b = 0x" + hex[(b>>4) & 0x0f] + hex[b & 0x0f]);
		System.out.println("b >>4 = 0x" + hex[(c>>4) & 0x0f] + hex[c & 0x0f]);
	}
}