CODEWITHSUNDEEP
javaswingjtextfield
user2805507
user2805507

Reputation:

Accessing JTextField Text

I have a simple program, I am trying to access the data from the textfield but I am always getting null or empty field.

For an example.

public class income {   
JButton save = new JButton("save");

  public JTextField setIncomeValue() {
  ..
  ..
    JTextField incomeValue = new JTextField(10);
    return incomeValue;
  }

  public void launch_Ui{
   frame.add(setIncomeValue());
   frame.add(save);
   save.addactionlistener(new saveListener());
  }
}

class saveListener  implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        String test = new income().setIncomeValue().getText();
        System.out.println("savings...  " + test + " value ?");
    }

}

Anybody have any idea or have stumble upon this challenge before?

Upvotes: 0

Views: 54

Answers (2)

user2805507
user2805507

Reputation:

Updates

After looking through my logic carefully, i have finally come out with a solution.
What i did was to create a scope inside my savelistener .

class saveListener implements ActionListener{

JTextField incomeData;

public saveListener(JTextField incomeData) {
    this.incomeData = incomeData;
 }

 @Override
 public void actionPerformed(ActionEvent e) {
 String test = incomeData.getText();
    System.out.println("Input data " + test);
  }
}

Hope this will help those who are in need :)

Upvotes: 1

Matthieu
Matthieu

Reputation: 3098

You're creating a new object on each call to setIncomeValue(), so you're getting null each time.

Add a JTextField member next to your JButton save and keep the reference to the first setIncomeValue():

JButton save = ...;
JTextField income = setIncomeValue(); // Created once
...

class SaveListener implements ActionListener{
    @Override
    public void actionPerformed(ActionEvent e) {
        String test = income.getText();
        ...
    }
}

That will work because SaveListener is an inner class of class Income (please use capitals for class names), and therefore has access to its mother class' members.

Upvotes: 0

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