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Detailed introduction to the use of spring assertions

零下一度
零下一度Original
2017-06-28 09:23:182079browse

Assertion is to determine that an actual value is what you expect, and if it is different, throw an exception.

Assert is often used for:

1. Determine whether the parameters of the method are normal values.
2. Used in juit.

 1 import org.springframework.util.Assert; 2  3 
 /** 4  * Created by hunt on 2017/6/27. 5  */ 6 public class AssertTest { 7     
 public static void main(String[] args) { 8         String name = null; 9         
 Assert.notNull(name,"name不能为空");10     }
  }

##Assert.notNull source code:

1     public static void notNull(Object object, String message) {        
if (object == null) {3             throw new IllegalArgumentException(message);4         }5     }

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