Optional (Apache Tomcat 8.0.53 API Documentation)

public class Optional
extends java.lang.Object

Methods
Modifier and Type	Method and Description
`java.lang.Object`	`get()`
`void`	`ifPresent(LambdaExpression le)`
`java.lang.Object`	`orElse(java.lang.Object other)`
`java.lang.Object`	`orElseGet(java.lang.Object le)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

public java.lang.Object get()
                     throws ELException

public void ifPresent(LambdaExpression le)

public java.lang.Object orElse(java.lang.Object other)

public java.lang.Object orElseGet(java.lang.Object le)

Class Optional