[Java]instanceof跟getClass()的区别

[Java]instanceof和getClass()的区别

getClass() will be useful when you want to make sure your instance is NOT a subclass of the class you are comparing with.

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class A { }class B extends A { }Object o1 = new A();Object o2 = new B();o1 instanceof A => trueo1 instanceof B => falseo2 instanceof A => true // <================ HEREo2 instanceof B => trueo1.getClass().equals(A.class) => trueo1.getClass().equals(B.class) => falseo2.getClass().equals(A.class) => false // <===============HEREo2.getClass().equals(B.class) => true