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

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AbstractClassWithoutAbstractMethod


AbstractClassWithoutAbstractMethod
The abstract class does not contain any abstract methods. An abstract class suggests
an incomplete implementation, which is to be completed by subclasses implementing the
abstract methods. If the class is intended to be used as a base class only (not to be instantiated
direcly) a protected constructor can be provided prevent direct instantiation.
      
		
		
		    
    			This rule is defined by the following XPath expression:
    			
    			
    //ClassOrInterfaceDeclaration
 [@Abstract='true'
  and count( .//MethodDeclaration[@Abstract='true'] )=0 ]
  [count(ImplementsList)=0]
  [count(.//ExtendsList)=0]
              
              
  
		    
		    
	    
	    
        
        
        Example:
            
                    

public abstract class Foo {
 void int method1() { ... }
 void int method2() { ... }
 // consider using abstract methods or removing
 // the abstract modifier and adding protected constructors
}