OptionalLong ifPresentOrElse() method in Java with examples
The ifPresentOrElse(java.util.function.LongConsumer, java.lang.Runnable) method helps us to perform the specified LongConsumer action the value of this OptionalLong object. If a value is not present in this OptionalLong, then this method performs the given empty-based Runnable emptyAction, passed as the second parameter
public void ifPresentOrElse(LongConsumer action, Runnable emptyAction)
Parameters: This method accepts two parameters:
- action: which is the action to be performed on this Optional, if a value is present.
- emptyAction: which is the empty-based action to be performed, if no value is present.
Return value: This method returns nothing.
Exception: This method throw NullPolongerException if a value is present and the given action is null, or no value is present and the given empty-based action is null.
Below programs illustrate ifPresentOrElse() method:
Value is present, its: 12
Value is empty