bitoperate.java

来自「《Java语言程序设计》源代码 很好的JAVA入门的好的代码」· Java 代码 · 共 25 行

 // BitOperate.java
public class BitOperate{
    public static void main(String []args){
		int i=123;
		int j=45;
        OutBitInt("i   ",i);
        OutBitInt("~i  ",~i);
        OutBitInt("-i  ",-i);
        OutBitInt("j   ",j);
        OutBitInt("i&j ", i&j);
        OutBitInt("i|j ", i|j);        
		OutBitInt("i^j ", i^j);
		OutBitInt("i<<2", i<<2);
		OutBitInt("i>>2", i>>2);
	}
	static void OutBitInt(String str,int i){
		System.out.print(str+",int: "+i+" ,binary:");
        System.out.print("     ");
		for(int j=31;j>=0;j--)
       		if(((1<<j)&i)!=0) System.out.print("1");
			else System.out.print("0");
		System.out.println();
	}
}