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

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EmptyStatementNotInLoop


EmptyStatementNotInLoop
An empty statement (aka a semicolon by itself) that is not used
as the sole body of a for loop or while loop is probably a bug.  It
could also be a double semicolon, which is useless and should be
removed.
       
		
		
		    
    			This rule is defined by the following XPath expression:
    			
    			
    
//EmptyStatement
 [not(
       ../../../ForStatement
       or ../../../WhileStatement
       or ../../../BlockStatement/ClassOrInterfaceDeclaration
       or ../../../../../../ForStatement/Statement[1]
        /Block[1]/BlockStatement[1]/Statement/EmptyStatement
       or ../../../../../../WhileStatement/Statement[1]
        /Block[1]/BlockStatement[1]/Statement/EmptyStatement)
 ]

                
  
		    
		    
	    
	    
        
        
        Example:
            
                    

public class MyClass {
   public void doit() {
      // this is probably not what you meant to do
      ;
      // the extra semicolon here this is not necessary
      System.out.println("look at the extra semicolon");;
   }
}