bitwiseop.java

开始学JAVA的几个程序

public class BitwiseOp
{
  static String binary[]={"0000","0001","0010","0011","0100","0101",
                          "0110","0111","1000","1001","1010","1011",
                          "1100","1101","1110","1111"};
  static final int FLAG1=1;
  static final int FLAG2=2;
  static final int FLAG4=8;
  public static void main(String args[])
  {
    int flags=0;
    System.out.println("clear all flags...flags="+binary[flags]);
    flags=flags|FLAG4;
    System.out.println("set flag4...flags="+binary[flags]);
    flags=flags^FLAG1;
    System.out.println("flags="+binary[flags]);
    flags=flags^FLAG2;
    System.out.println("flags="+binary[flags]);
    int cf1=~FLAG1;
    flags=flags&cf1;
    System.out.println("flags="+binary[flags]);
    int f4=flags&FLAG4;
    f4=f4>>>3;
    System.out.println("flags="+binary[flags]);
  }                        
}