resources.report.rules.pmd.FinalFieldCouldBeStatic.html Maven / Gradle / Ivy

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FinalFieldCouldBeStatic


FinalFieldCouldBeStatic
If a final field is assigned to a compile-time constant, it could be
made static, thus saving overhead in each object at runtime.
      
		
		
		    
    			This rule is defined by the following XPath expression:
    			
    			
                        
//FieldDeclaration
 [@Final='true' and @Static='false']
 [not (../../../../ClassOrInterfaceDeclaration[@Interface='true'])]
   /VariableDeclarator/VariableInitializer/Expression
    /PrimaryExpression/PrimaryPrefix/Literal
                    
                
  
		    
		    
	    
	    
        
        
        Example:
            
                    
  
public class Foo {
 public final int BAR = 42; // this could be static and save some space
}