CODEWITHSUNDEEP
java
JohnL
JohnL

Reputation: 15

JAVA IF Else variables

public void actionPerformed(ActionEvent arg0) {
    String employeeInput;
    String assetInput;

    String userInput = txtUserInput.getText();
    userInput = userInput.toLowerCase();

    if (userInput.startsWith("emp")){

        //String employeeInput = null;
        employeeInput = userInput.replaceAll("\\s","");
        txtUserInput.setText("");

        JOptionPane.showMessageDialog(frame, "The Scan was " );

    }else if (userInput.startsWith("u")){

        assetInput = userInput;
        assetInput.replaceAll("\\s","");
        txtUserInput.setText("");


        System.out.println("Employee ID is " + **employeeInput**); //asks for employeeInput to be declared.

        JOptionPane.showMessageDialog(frame, "The Scan was " + assetInput);

I want the employeeInput to be filled and saved, untill it is replaced by another employeeInput. The problem I'm having is when getting the item input, the employeeInput is now missing. What is the way to do this?

Thank you, for your help

Upvotes: 0

Views: 84

Answers (3)

Luke Melaia
Luke Melaia

Reputation: 1468

It doesn't look like your employeeInput variable is 'missing' or could be removed after any other variable is set. So its most likely you aren't initializing your variables when they're defined.

Try initializing them like

String employeeInput = ""; // or = null
String assetInput = ""; // or = null
String userInput = txtUserInput.getText().toLowerCase();

And your problem should be solved. The compiler might also be giving you a warning about this.

You might also want to try removing this txtUserInput.setText(""); line to test for problems.

Edit:

If you are trying to access this variable after your method has finished executing then it will be wiped so instead of putting it in your method declare it in your class like public class Name{ public /*static*/ String employeeInput = ""; //or null }

Upvotes: 0

ktorn
ktorn

Reputation: 1052

employeeInput is a method variable, so everytime you exit the method you will lose the reference to it.

The obvious thing to try is turn employeeInput into a member variable. Just declare it at the top of your class.

Better yet may be to persist that value to a database.

Upvotes: 1

Elliott Frisch
Elliott Frisch

Reputation: 201439

The compiler doesn't know that the first condition has already been met. Nor, do I. But, you could change

String employeeInput; // <-- may not have been initialized

to a default value (possibly even explicitly null), here the empty String "".

String employeeInput = "";

Upvotes: 1

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