public final class Assert extends Object
Modifier and Type | Method and Description |
---|---|
static <T> T |
requireNonNull(T object,
String message)
Deprecated.
Will be removed in 2.5.
|
@Deprecated 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
- message to populate the NPE with if necessaryNullPointerException
- if object
is null
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