testbitset.java

来自「一个很好的Java函数实例」· Java 代码 · 共 45 行

package apibook.c2.s1;

import java.util.*;
public class TestBitSet {

  public TestBitSet() {
  }
  public static void printBitSet(BitSet bs){  //显示对象中的位
    for (int i = 0; i < bs.length(); i++) {
      System.out.println(bs.get(i));
    }
  }
  public static void main(String[] args) {
    BitSet BS1 = new BitSet(10);  //创建两个BitSet对象
    BitSet BS2 = new BitSet(10);
    //对BitSet对象中的位进行设置
    BS1.set(0);
    BS1.set(4);
    BS1.set(6);
    BS1.set(7);
    BS1.set(9);
    TestBitSet.printBitSet(BS1);
    System.out.println("----------------------------------");
    System.out.println(BS1.size()); //显示BitSet对象的大小
    System.out.println(BS1.length()); //显示对象的长度
    System.out.println("----------------------------------");
    BS2.set(0);
    BS2.set(5);
    BS2.set(3);
    BS2.set(7);
    BS2.set(8);
    BS1.and(BS2);
    TestBitSet.printBitSet(BS1);
    System.out.println("----------------------------------");
    BS1.xor(BS2);  //对两个BitSet对象取异或操作
    TestBitSet.printBitSet(BS1);
    System.out.println("----------------------------------");
    BS1.andNot(BS2); //对两个BitSet对象取与非操作
    TestBitSet.printBitSet(BS1);
    System.out.println("----------------------------------");
    BS1.or(BS2);  //对两个BitSet对象取或操作
    TestBitSet.printBitSet(BS1);
    System.out.println("----------------------------------");
  }
}