15 lines
548 B
Markdown
15 lines
548 B
Markdown
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---
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title: instanceof Operator
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---
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# `instanceof` operator
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The `instanceof` operator allows you to check the validity of a `IS A` relationship. If at any point of time, we are not sure about this and we want to validate this at runtime, we can do the following:
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```java
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//assuming vehicle is an instance of Class `Car` the expression inside the 'if' will return true
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if(vehicle instanceof Car){
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//do something if vehicle is a Car
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}
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```
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**Note**: If you apply the instanceof operator with any variable that has null value, it returns false.
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