Why am I getting “Static method cannot be referenced from a non static context: String...












1















I have this static class called from my lightning component, but am getting the error




"Static method cannot be referenced from a non static context: String String.valueOf(Object)"




on the line where I try and calculate a start date from the string passed. What do I need to do to fix this?



@AuraEnabled

public static void generatePDF(myRec__c rec, string selquarter){

    string selqenddate = selquarter.substringBetween('(', ')');

    date startdate = (selqenddate.valueOf(selqenddate)).addMonths(-3).startofMonth;

    myPDF(rec.id, '', '');

}





apex parameters static







share|improve this question





























    1















    I have this static class called from my lightning component, but am getting the error




    "Static method cannot be referenced from a non static context: String String.valueOf(Object)"




    on the line where I try and calculate a start date from the string passed. What do I need to do to fix this?



    @AuraEnabled
    
public static void generatePDF(myRec__c rec, string selquarter){
    
    string selqenddate = selquarter.substringBetween('(', ')');
    
    date startdate = (selqenddate.valueOf(selqenddate)).addMonths(-3).startofMonth;
    
    myPDF(rec.id, '', '');
    
}





    apex parameters static







    share|improve this question



























      1












      1








      1








      I have this static class called from my lightning component, but am getting the error




      "Static method cannot be referenced from a non static context: String String.valueOf(Object)"




      on the line where I try and calculate a start date from the string passed. What do I need to do to fix this?



      @AuraEnabled
      
public static void generatePDF(myRec__c rec, string selquarter){
      
    string selqenddate = selquarter.substringBetween('(', ')');
      
    date startdate = (selqenddate.valueOf(selqenddate)).addMonths(-3).startofMonth;
      
    myPDF(rec.id, '', '');
      
}





      apex parameters static







      share|improve this question
















      I have this static class called from my lightning component, but am getting the error




      "Static method cannot be referenced from a non static context: String String.valueOf(Object)"




      on the line where I try and calculate a start date from the string passed. What do I need to do to fix this?



      @AuraEnabled
      
public static void generatePDF(myRec__c rec, string selquarter){
      
    string selqenddate = selquarter.substringBetween('(', ')');
      
    date startdate = (selqenddate.valueOf(selqenddate)).addMonths(-3).startofMonth;
      
    myPDF(rec.id, '', '');
      
}





      apex parameters static




      apex parameters static






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 4 hours ago









      Jayant Das

      17.4k21330




      17.4k21330










      asked 4 hours ago









      IreneIrene

      5052418




      5052418






















          2 Answers
          2






          active

          oldest

          votes


















          4














          The string class's valueOf() method is a static method.



          Static methods need to be called like this: Class.staticMethodName() i.e. String.valueOf()



          What you're currently doing is using an instance of a string to try to call a static method, which (as the error indicates) is not allowed.



          bad:



          selqenddate.valueOf(selqenddate)


          good:



          String.valueOf(selqenddate)


          Of course, you don't need to use String.valueOf() at all here because selquarter is a string, and substringBetween() also returns a string.



          Instead, you need to be using a method that takes a String as input, and gives you a Date as output such as Date.parse()






          share|improve this answer































            1














            As the error suggests, you are trying to use a static method valueOffrom String class on an instance of a String named selqenddate, which is not allowed.



            You are most likely are trying to construct a date from a string value, and that you will need to utilize the Date.valueOf()instead. Your code should look like something as below:



            Date startdate = 
            
    (Date.valueOf(selqenddate))
            
        .addMonths(-3)
            
            .toStartOfMonth();


            Note, there’s no property startOfMonth on Date class.






            share|improve this answer
























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              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              4














              The string class's valueOf() method is a static method.



              Static methods need to be called like this: Class.staticMethodName() i.e. String.valueOf()



              What you're currently doing is using an instance of a string to try to call a static method, which (as the error indicates) is not allowed.



              bad:



              selqenddate.valueOf(selqenddate)


              good:



              String.valueOf(selqenddate)


              Of course, you don't need to use String.valueOf() at all here because selquarter is a string, and substringBetween() also returns a string.



              Instead, you need to be using a method that takes a String as input, and gives you a Date as output such as Date.parse()






              share|improve this answer




























                4














                The string class's valueOf() method is a static method.



                Static methods need to be called like this: Class.staticMethodName() i.e. String.valueOf()



                What you're currently doing is using an instance of a string to try to call a static method, which (as the error indicates) is not allowed.



                bad:



                selqenddate.valueOf(selqenddate)


                good:



                String.valueOf(selqenddate)


                Of course, you don't need to use String.valueOf() at all here because selquarter is a string, and substringBetween() also returns a string.



                Instead, you need to be using a method that takes a String as input, and gives you a Date as output such as Date.parse()






                share|improve this answer


























                  4












                  4








                  4







                  The string class's valueOf() method is a static method.



                  Static methods need to be called like this: Class.staticMethodName() i.e. String.valueOf()



                  What you're currently doing is using an instance of a string to try to call a static method, which (as the error indicates) is not allowed.



                  bad:



                  selqenddate.valueOf(selqenddate)


                  good:



                  String.valueOf(selqenddate)


                  Of course, you don't need to use String.valueOf() at all here because selquarter is a string, and substringBetween() also returns a string.



                  Instead, you need to be using a method that takes a String as input, and gives you a Date as output such as Date.parse()






                  share|improve this answer













                  The string class's valueOf() method is a static method.



                  Static methods need to be called like this: Class.staticMethodName() i.e. String.valueOf()



                  What you're currently doing is using an instance of a string to try to call a static method, which (as the error indicates) is not allowed.



                  bad:



                  selqenddate.valueOf(selqenddate)


                  good:



                  String.valueOf(selqenddate)


                  Of course, you don't need to use String.valueOf() at all here because selquarter is a string, and substringBetween() also returns a string.



                  Instead, you need to be using a method that takes a String as input, and gives you a Date as output such as Date.parse()







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 4 hours ago









                  Derek FDerek F

                  20.8k52353




                  20.8k52353

























                      1














                      As the error suggests, you are trying to use a static method valueOffrom String class on an instance of a String named selqenddate, which is not allowed.



                      You are most likely are trying to construct a date from a string value, and that you will need to utilize the Date.valueOf()instead. Your code should look like something as below:



                      Date startdate = 
                      
    (Date.valueOf(selqenddate))
                      
        .addMonths(-3)
                      
            .toStartOfMonth();


                      Note, there’s no property startOfMonth on Date class.






                      share|improve this answer




























                        1














                        As the error suggests, you are trying to use a static method valueOffrom String class on an instance of a String named selqenddate, which is not allowed.



                        You are most likely are trying to construct a date from a string value, and that you will need to utilize the Date.valueOf()instead. Your code should look like something as below:



                        Date startdate = 
                        
    (Date.valueOf(selqenddate))
                        
        .addMonths(-3)
                        
            .toStartOfMonth();


                        Note, there’s no property startOfMonth on Date class.






                        share|improve this answer


























                          1












                          1








                          1







                          As the error suggests, you are trying to use a static method valueOffrom String class on an instance of a String named selqenddate, which is not allowed.



                          You are most likely are trying to construct a date from a string value, and that you will need to utilize the Date.valueOf()instead. Your code should look like something as below:



                          Date startdate = 
                          
    (Date.valueOf(selqenddate))
                          
        .addMonths(-3)
                          
            .toStartOfMonth();


                          Note, there’s no property startOfMonth on Date class.






                          share|improve this answer













                          As the error suggests, you are trying to use a static method valueOffrom String class on an instance of a String named selqenddate, which is not allowed.



                          You are most likely are trying to construct a date from a string value, and that you will need to utilize the Date.valueOf()instead. Your code should look like something as below:



                          Date startdate = 
                          
    (Date.valueOf(selqenddate))
                          
        .addMonths(-3)
                          
            .toStartOfMonth();


                          Note, there’s no property startOfMonth on Date class.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 4 hours ago









                          Jayant DasJayant Das

                          17.4k21330




                          17.4k21330






























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