byteushift.java

Java 程序设计源码 只提供了部分

//unsigned shift a byte value
class ByteUSift{
	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) 0xF1;
		byte c = (byte) (b >> 4);
		byte d = (byte) (b >>> 4);
		byte e = (byte) ((b & 0xFF) >> 4);

		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]);
		System.out.println("	b >>> 4 = 0x" + Hex[(d >> 4) & 0x0F] + Hex[d & 0x0F]);
		System.out.println("	(b & 0xFF) >> 4 = 0x" + Hex[(e >> 4) & 0x0F] + Hex[e & 0x0F]);
	}
}