ex040103.java

我在学习JAVA的讲义

class eX040103{
	public static void main(String[] args){
		Boolean b1= new Boolean(true);
		Boolean b2= new Boolean(true);	
		Object obj1 = (Object) b1;
		Object obj2 = (Object) b2;
		if (obj1 == obj2)
			{if (obj1.equals(obj2))
				System.out.println("a");
			else
				System.out.println("b");}
		else
			if (obj1.equals(obj2))
				System.out.println("c");
			else
				System.out.println("d");
	}
}