> In Java, an **`OptionalLong` object** is a container object which may or may not contain a `long` value. The `OptionalLong` class is present in the `java.util` package.

# 
#  What is the `isPresent()` method of the `OptionalLong` class? 

The **`isPresent()` method** is used to check if an `OptionalLong` object contains a value. 

##  
## Syntax

```java
public boolean isPresent()
```

This method doesn't take any argument.

This method returns `true` if the `OptionalLong` object contains a `long` value. Otherwise, it returns `false`.

## Code 

The code below shows how to use the `isPresent()` method.

import java.util.OptionalLong;
  
class OptionalLongIsPresentExample {
    public static void main(String[] args) {
        OptionalLong optional1 = OptionalLong.empty();
        OptionalLong optional2 = OptionalLong.of(1);
        System.out.println("Checking if optional1 has value : " + optional1.isPresent());
        System.out.println("Checking if optional2 has value : " + optional2.isPresent());
    }
}

## Explanation 

In the code above:

* In line 1, we imported the `OptionalLong` class.
```
import java.util.OptionalLong;
```

* In line 5, we used the `empty()` method to get an empty `OptionalLong` object. The returned object doesn't have any value.

```
OptionalLong optional1 = OptionalLong.empty();
```

* In line 6, we used the `of()` method to get an `OptionalLong` object with value `1`.
```
OptionalLong optional2 = OptionalLong.of(1);
```

* In line 7, we called the `isPresent()` method on the object `optional1`. This object doesn't have any value, so `false` is returned.

```
optional1.isPresent(); //false
```

* In line 8, we called the `isPresent()` method on the object `optional2`. This object has `1` as the value, so `true` is returned.

```
optional2.isPresent(); //true
```

What is the OptionalLong.isPresent() method in Java?

The isPresent() method checks if an OptionalLong contains a value, returning true or false accordingly.

What is the OptionalLong.isPresent() method in Java?

What is the isPresent() method of the OptionalLong class?

Syntax

Code

Explanation

What is the `isPresent()` method of the `OptionalLong` class?