JTextField根本不响应

Question

I have gone through the other question with same title but that isn't much helpful. I am using GridBagLayout to build a form. But the JTextFields in my form simply doesn't respond. I click in it but it doesn't show the cursor. Thus i cant enter anything in it. Code snippet is as follows:

  //textfields
    weighttf = new JTextField(20);

    go = new JButton("Get my Ideal Weight");
    go.setFont(centerpanelfont);

    centerpanel.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();

    c.weightx=0.5;
    c.weighty=0.5;

    c.gridx=0;
    c.gridy=1;
    centerpanel.add(weighttf,c);

Answer 1

尝试使文本字段可编辑

weighttf.setEditable(true);