public boolean isPresent()

// Java program to demonstrate
// Optional.isPresent() method
  
import java.util.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // create a Optional
        Optional<Integer> op
            = Optional.of(9455);
  
        // print value
        System.out.println("Optional: "
                           + op);
  
        // check for the value
        System.out.println("Is any value present: "
                           + op.isPresent());
    }
}

Optional: Optional[9455]
Is any value present: true

// Java program to demonstrate
// Optional.isPresent() method
  
import java.util.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // create a Optional
        Optional<Integer> op
            = Optional.empty();
  
        // print value
        System.out.println("Optional: "
                           + op);
  
        try {
  
            // check for the value
            System.out.println("Is any value present: "
                               + op.isPresent());
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Optional: Optional.empty
Is any value present: false