Question

For practice, I am trying to create a fully functional calculator. I copied the ActionListener class of my code below. I feel like my this method for getting the users input, storing it as an integer/double does not work well as it is too basic and does not work in all cases. I was wondering if anyone can help me figure out a way to structure my code, get user input for two numbers and a symbol, and basically create a fully function GUI calculator. My problem is getting user input from my JButton, storing as a number that in way like a calculator does, (press 1 twice == 11) and using it for later calculation.

I appreciate any advice in this regard.

private class TheHandler implements ActionListener{
            public void actionPerformed(ActionEvent event){
                while(equals!=event.getSource())
                    if(one==event.getSource()){
                       result.setText("1");
                       num1=1;
                    }
                    else if(two==event.getSource()){
                       result.setText("2");

                    }
                    else if(three==event.getSource()){
                       result.setText("3");
                    }
                    else if(four==event.getSource()){
                       result.setText("4");
                    }
                    else if(five==event.getSource()){
                       result.setText("5");
                    }
                    else if(six==event.getSource()){
                       result.setText("6");
                    }
                    else if(seven==event.getSource()){
                       result.setText("7");
                    }
                    else if(eight==event.getSource()){
                       result.setText("8");
                    }
                    else if(nine==event.getSource()){
                        result.setText("9");
                    }
                    else if(zero==event.getSource()){
                        result.setText("0");
                    }
                }
            }

Answer 1

You should remove the while at all.

I would suggest to use numeric vars like

long num = 0;
int digit;

Each event should just set digit

 ...
 else if(nine==event.getSource()){
     digit = 9;
 } else if(zero==event.getSource()){
     digit = 0;
 }
...
num = num * 10 + digit;
...
result.setText(Long.toString(num));