How do I access an abstract class' Hashmap?

Question

I have two classes. One is a public class and the other is an abstract class with HashMap of objects. How do I call the abstract class' HashMap.get(string) method from my public class? I am new to Java and may be having this problem because I am not understanding how to setup my java files correctly.

Here are sections of my two classes...(in same file Evaluator.java)

    public class  Evaluator {
     ...code        
     public int eval (String expr) {
        Operator newOpr = (Operator) operators.get(tok);
     }
    ... more code
    } 



//abstract class

    abstract class Operator {

        Operator(){
        HashMap operators = new HashMap();
        operators.put("+",new AdditionOperator()); 
        operators.put("-",new SubtractionOperator());
        }

        abstract int priority();

        static boolean check(String tok){
        return true;
        }   

        abstract Operand execute(Operand opd1, Operand opd2);

    }

    //priority 2, addition and subtraction
    class AdditionOperator extends Operator{
        @Override 
        int priority(){
            return 2;
        }

        @Override
        public Operand execute (Operand op1, Operand op2){
          ...code
        }

    }

Answer 1

Welcome in the java world ! give-us the code of your two Class(the public and the abstract) if you want a preciseanswer.

You probably need to create a not abstract class who extends the abstract Class to call the method.