org.apache.logging.log4j.core.helpers
Class Assert

java.lang.Object
  extended by org.apache.logging.log4j.core.helpers.Assert

public final class Assert
extends Object

Utility class providing common validation logic.


Method Summary
static
<T> T
isNotNull(T checkMe, String name)
          Throws a NullPointerException if the specified parameter is null, otherwise returns the specified parameter.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

isNotNull

public static <T> T isNotNull(T checkMe,
                              String name)
Throws a NullPointerException if the specified parameter is null, otherwise returns the specified parameter.

Usage:

 // earlier you would write this:
 public SomeConstructor(Object param) {
     if (param == null) {
         throw new NullPointerException(name + " is null");
     }
     this.field = param;
 }
 
 // now you can do the same in one line:
 public SomeConstructor(Object param) {
     this.field = Assert.isNotNull(param);
 }
 

Type Parameters:
T - the type of the parameter to check and return
Parameters:
checkMe - the parameter to check
name - name of the parameter to use in the error message if null
Returns:
the specified parameter


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