Boolean类的测试

最新推荐文章于 2024-05-10 10:15:19 发布

iteye_3044

最新推荐文章于 2024-05-10 10:15:19 发布

阅读量457

点赞数

分类专栏： java基础文章标签： C C++ C#

本文链接：https://blog.youkuaiyun.com/iteye_3044/article/details/81881799

版权

java基础专栏收录该内容

26 篇文章

订阅专栏

//Boolean的测试

/**
* @author huangtao
*/
public class BooleanTest
{
public static void main(String[] args)
{
  //声明Boolean对象
  boolean flag = false;
  Boolean bo = new Boolean(flag);
  Boolean bo1 = new Boolean(new String("false"));

  boolean flagtwo = true;
  Boolean boo = new Boolean(flagtwo);
  String a = "true";
  Boolean botwo = new Boolean(a);

  //获取boolean值
  System.out.println(bo.booleanValue());
  System.out.println(bo.compareTo(boo));
  System.out.println(bo.compareTo(bo));
  System.out.println(bo.equals(bo));
  System.out.println(bo.equals(boo));
  System.out.println(bo.equals(bo1));

  //获取hash码
  System.out.println(bo.hashCode()+bo1.hashCode()+botwo.hashCode()+boo.hashCode());
  System.out.println(bo.hashCode()+"_"+bo1.hashCode()+"_"+botwo.hashCode()+"_"+boo.hashCode());

  //获取boolean值
  System.out.println(Boolean.parseBoolean(new String("true")));
  System.out.println(Boolean.parseBoolean(new String("false")));
  System.out.println(bo.toString()+""+bo1.toString()+""+boo.toString()+""+botwo.toString());

  if ("false".equals(bo.toString()))
  {
   System.out.println("equal");
  }
  else
  {
   System.out.println("not equal");
  }

  if ("false".equals(Boolean.toString(flagtwo)))
  {
   System.out.println("equal");
  }
  else
  {
   System.out.println("not equal");
  }

  //产生Boolean对象
  Boolean c = Boolean.valueOf(flag);
  //获取boolean值
  System.out.println(c.booleanValue());
  Boolean c1 = Boolean.valueOf(new String("false"));
  //获取boolean值
  System.out.println(c1.booleanValue());
  Boolean c2 = Boolean.valueOf(a);
  //获取boolean值
  System.out.println(c2.booleanValue());

  Boolean fa = Boolean.FALSE;
  Boolean tr = Boolean.TRUE;
  System.out.println(fa.booleanValue());
  System.out.println(tr.booleanValue());

  //获取类类型
  Class ca = Boolean.TYPE;
  System.out.println(ca.getClass().getName());
}
}