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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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AvoidCatchingNPE


AvoidCatchingNPE
Code should never throw NPE under normal circumstances.  A catch block may hide the original error, causing other more subtle errors in its wake.
    
		
		
		    
    			This rule is defined by the following XPath expression:
    			
    			
                
//CatchStatement/FormalParameter/Type
 /ReferenceType/ClassOrInterfaceType[@Image='NullPointerException']
 
        
  
		    
		    
	    
	    
        
        
        Example:
            
                      
public class Foo {
 void bar() {
  try {
   // do something
   }  catch (NullPointerException npe) {
  }
 }
}