Optional get() Method - Get Value from Optional Object in Java

In this source code example, we will demonstrate how to get a value from the Optional class object using the get() method.

Get Value from Optional Object in Java - get() Method

The get() method returns a value if it is present in this Optional otherwise throws NoSuchElementException.

In the below example, the get() method returns a value because the value is present in the Optional class object:

package com.java.lambda.optional; import java.util.Optional; public class OptionalDemo { public static void main(String[] args) { String email = "ramesh@gmail.com"; Optional<String> stringOptional = Optional.ofNullable(email); String value = stringOptional.get(); System.out.println(value); } }
Output:
ramesh@gmail.com

In the below example, the get() method throws the NoSuchElementException because the value is not present in the Optional class object:

package com.java.lambda.optional; import java.util.Optional; public class OptionalDemo { public static void main(String[] args) { String email = null; Optional<String> stringOptional = Optional.ofNullable(email); String value = stringOptional.get(); System.out.println(value); } }

Output:

Exception in thread "main" java.util.NoSuchElementException: No value present	at java.base/java.util.Optional.get(Optional.java:143)	at com.java.lambda.optional.OptionalDemo.main(OptionalDemo.java:10)

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