返回一个空字符串

Question

I'm calling a textField box with input in the box via a button but it is returning an empty string. Here is the same code;

Panel Class
    //creates the textField
    panel1.add(text.getfname());







Class TextBoxes 

public JTextField getfname(){   
    JTextField fname = new JTextField(80);
    fname.setBounds( 100, 100, 150, 20 );
    fname.setSize(200,30);
    return fname;

    }

And class where the textField is called

TextBoxes text = new TextBoxes();
String fname = text.getfname().getText();

I'm just a little puzzled

Answer 1

Well you're creating a new JTextField within getfname :

JTextField fname = new JTextField(80);
fname.setBounds( 100, 100, 150, 20 );
fname.setSize(200,30);
return fname;

What content would you expect that to have?

I suspect you really intended to return an existing JTextField - presumably one which has been displayed to a user.

I would consider changing the method to return a String instead of the text box itself, too:

public String getFirstName() {
     // Or whatever the existing text box variable is called
    return firstNameField.getText();
}

Answer 2

You're always creating a new textfield.

Unless you put the textfield somewhere, and enter data in it, it will always be empty.