public final class Assert extends Object
Modifier and Type | Method and Description |
---|---|
static <T> T |
requireNonNull(T object,
String message)
Throws a
NullPointerException if the specified parameter is
null , otherwise returns the specified parameter. |
public static <T> T requireNonNull(T object, String message)
NullPointerException
if the specified parameter is
null
, otherwise returns the specified parameter.
On Java 7, just use Objects.requireNonNull(T, String)
Usage:
// earlier you would write this: public SomeConstructor(Object param) { if (param == null) { throw new NullPointerException("param"); } this.field = param; } // now you can do the same in one line: public SomeConstructor(Object param) { this.field = Assert.requireNonNull("param"); }
T
- the type of the parameter to check and returnobject
- the parameter to checkmessage
- name of the parameter to use in the error message if
null
Copyright © 1999-2018 Apache Software Foundation. All Rights Reserved.
Apache Logging, Apache Log4j, Log4j, Apache, the Apache feather logo, the Apache Logging project logo, and the Apache Log4j logo are trademarks of The Apache Software Foundation.