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5.1.2 instanceof 运算符

instanceof是二元运算符,左边是对象,右边是类;当对象是右面类或子类所创建对象时,返回true;否则,返回false。比如:

【示例5-2】使用instanceof运算符进行类型判断

java
public class Test{
    public static void main(String[] args) {
        Student s = new Student("高淇",172,"Java");
        System.out.println(s instanceof Person);
        System.out.println(s instanceof Student);
    }
}

两条语句的输出结果都是true。