Local variable problem

Question

I am making an application that takes an apartment number and number of occupants in that apartment and then displays a number of statistics. So far I haven't had much problem
except on a what is probably a very simple problem.
I have two buttons, and when "store" is clicked the info in the textboxes is input to an array.
My problem is with the next button, "quit", this is where all the info is supposed to be displayed.
All my variables that I need from "store" are local and are recognized in " the if statement in quit. Ive tried declaring them outside of the if statement, but it hasn't been working.
{code}
public void actionPerformed(ActionEvent event)
               Object source = event.getSource();
               Apartment input;
               if (source == store)
                    Integer aptNo = Integer.parseInt(input1.getText());
                    Integer occup = Integer.parseInt(input2.getText());
                    input = new Apartment(aptNo, occup);
                    if(aptNo > BUILDING_SIZE)
                         JOptionPane.showMessageDialog(null, "That apartment number doesn't exist.");
                    else if(occup > MAX_OCCUPANTS)
                         JOptionPane.showMessageDialog(null, "Too many occupants, only 20 are permitted per apartment.");
                    else
                         occupants[aptNo] = occup;
                         input1.setText("");
                         input2.setText("");
                         JOptionPane.showMessageDialog(null, input.getNumber(occupants));
               if (source == quit)
               // I need the variables aptNo and occup in here to put into my methods for output, but I don't know how to get them.     
{code}

Answer 1

EmmCeeVee wrote:
Thank you for all of the responses, it really helps me out.
Obviously my knowledge of local variables is hurting as I switched it around as your said and declared the aptNo and occup outside of the if's.
All I need is for the quit button to look at the array ( which has just been modified by the sotre button) and output a bunch of results.
Heres where im at:Your problem is of scope of the variables.
Here whatever variable you defined in actionPerformed they are local for that method (they are out of scope when the method is finished/called again), Upon this, the actionPerformed is called twice one for store and another time for quit. So you cant expect the value stored at store should be there still when you all quit
If you want those values available on both the actions then make them a class level variables.
Below is a sample program, might help you.
class Employee
     String empName = null;
     int empNo;
     Employee(String eName,int eNmbr)
          this.empName = eName;
          this.empNo = eNmbr;
class CheckVariableScope
        Employee empOb; // Here
     int eNo;
     String eName = null;
     public void checkScope(String action)
                //Instead of defining Employee reference variable, eNo and eName  in checkScope method, define it @ class level.
                // in your case they are Apartment input, Integer aptNo and Integer occup
                 // like above i did.
                 // If i comment the class level variable and uncomment method variable, this program also give the same error.
          //Employee empOb;
          //int eNo;             
          //String eName = null;
          if (action.equals("Store") )
                    eNo = 10;
                    eName = "Bob";
                    empOb = new Employee(eName, eNo);
                    System.out.println("The eName is : "+empOb.empName+" , empNo is : "+empOb.empNo);
               if (action.equals("quit"))
                    System.out.println(" eNO from Object is : "+empOb.empNo);
                    System.out.println(eNo); //Error: may not have been intitialized
     public static void main (String st[])
          CheckVariableScope ob = new CheckVariableScope();
          ob.checkScope("Store");
          ob.checkScope("quit");
}