To JAVA professionals I want change value of the variable to value another to another value : i am try change value the variable NO_OF_QUESTIONS_PER_LEVEL  from value 9 to 19 by By a function " IF " 



public class Constant {


    public static int NO_OF_QUESTIONS_PER_LEVEL = 9  ; 

    public static int NO_OF_QUESTIONS_PER_LEVEL (int[] args ) {

        if( NO_OF_QUESTIONS_PER_LEVEL  == 10 ) {
            NO_OF_QUESTIONS_PER_LEVEL = 11 ; //i want change value to 11
        }

        else if( NO_OF_QUESTIONS_PER_LEVEL  == 9 ) {
            NO_OF_QUESTIONS_PER_LEVEL = 19 ; //i want change value to 19
        }

        else {
            NO_OF_QUESTIONS_PER_LEVEL = 10 ; //
        }

    }


Where is the wrong place in the code 
