Optional orElse() method in Java with examples

Last Updated : 30 Jul, 2019

The orElse() method of java.util.Optional class in Java is used to get the value of this Optional instance, if present. If there is no value present in this Optional instance, then this method returns the specified value.

Syntax:

public T orElse(T value)

Parameters: This method accepts value as a parameter of type T to return if there is no value present in this Optional instance.

Return value: This method returns the value of this Optional instance, if present. If there is no value present in this Optional instance, then this method returns the specified value.

Below programs illustrate orElse() method:
Program 1:

// Java program to demonstrate 
// Optional.orElse() 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); 
  
        // orElse value 
        System.out.println("Value by orElse"
                           + "(100) method: "
                           + op.orElse(100)); 
    } 
} 

Output:

Optional: Optional[9455]
Value by orElse(100) method: 9455

Program 2:

// Java program to demonstrate 
// Optional.orElse() 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 { 
  
            // orElse value 
            System.out.println("Value by orElse"
                               + "(100) method: "
                               + op.orElse(100)); 
        } 
        catch (Exception e) { 
            System.out.println(e); 
        } 
    } 
} 

Output:

Optional: Optional.empty
Value by orElse(100) method: 100

Reference: https://docs.oracle.com/javase/9/docs/api/java/util/Optional.html#orElse-T-

Optional ifPresentOrElse() method in Java with examples

ShubhamMaurya3

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Optional orElse() method in Java with examples

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