java - GridBagLayout 对齐文本字段吗？

Question

我想缩短我的文本字段，这样它就不会延伸到我的 jframe 的末尾，所以它现在看起来是这样的:

如何控制文本字段的宽度，使其不会像我尝试过 setPreferedSize() 和 setSize() 但它们不起作用？

@Override
        public void run() {

            JFrame frame = new JFrame("Test Calculator");
            frame.setVisible(true);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLocationRelativeTo(null);
            frame.setSize(500, 500);

            JPanel panel = new JPanel(new GridBagLayout());
            frame.getContentPane().add(panel, BorderLayout.NORTH);
            GridBagConstraints c = new GridBagConstraints();

            JLabel testLabel = new JLabel("Enter Score For Test 1: ");  
            c.gridx = 0;
            c.gridy = 0;
            c.anchor = GridBagConstraints.WEST;
            c.fill = GridBagConstraints.BOTH;
            c.insets = new  Insets(40, 15, 15, 0);
            panel.add(testLabel , c);


            JTextField txtField1 = new JTextField("TextField");
            c.gridx = 1;
            c.gridy = 0;
            c.fill = GridBagConstraints.HORIZONTAL;
            c.weightx = .5; 
            panel.add(txtField1 , c);
        }

Answer 1

您告诉布局文本字段必须水平填充，这就是它的作用。替换

c.fill = GridBagConstraints.HORIZONTAL;

由

c.fill = GridBagConstraints.NONE;