运算符的实例
此运算符检查对象是否属于特定的类/接口类型。 instanceof 运算符写成:
( Object reference variable ) instanceof (class/interface type)
例:
public class Test {
public static void main(String args[]){
String name = "Buyya";
// following will return true since name is type of String
boolean result = name instanceof String;
System.out.println( result );
}
}
这将产生以下结果:
true
如果要比较的对象是与右侧类型兼容的赋值,则此运算符仍将返回 true。
例:
class Vehicle {}
public class Car extends Vehicle {
public static void main(String args[]){
Vehicle a = new Car();
boolean result = a instanceof Car;
System.out.println( result );
}
}
这将产生以下结果:
true