# Overview

The method **`isNull`** is a static method of the `Objects` class in java that checks whether the input object reference supplied to it is `null` or not. 

* If the passed object is `null`, then the method returns `true`.
* If the passed object is `non-null`, then the method returns `false`.

This method was introduced in Java 8. To use the `nonNull` method, import the following module:

```
java.util.Objects
```

# Syntax

```
public static boolean isNull(Object obj)
```

## Parameters:  
This method takes one parameter, **`Object obj`**, an object reference to check against `null`.

# Examples

In the code below, a `non-null` string object is passed to the `isNull` method, and returns `false`:

import java.util.Objects;

public class Main {
    public static void main(String[] args) {
        String s = "hello";
        System.out.println(Objects.isNull(s));
    }
}

In the code below, `null` is passed to the `isNull` method and returns `true`:

import java.util.Objects;

public class Main {
    public static void main(String[] args) {
        System.out.println(Objects.isNull(null));
    }
}


What is Objects.isNull in Java?

Overview

Syntax

Parameters:

Examples