小编Dan*_*ish的帖子

我有这个程序,它几乎是一个计算器但是每次点击标签时都会有一个移动的JLabel,它应该会改变颜色,但是我在代码的最底部有3个错误,我用注释标记了.这三个都是:错误:不兼容的类型:从long到int的可能有损转换

public class TestCalculator {
private ResultPane resultPane;


public static void main(String[] args) {
    new TestCalculator();
}

public TestCalculator() {
    EventQueue.invokeLater(new Runnable() {
        @Override
        public void run() {
            try {
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                resultPane = new ResultPane();
            } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
            }

            JFrame frame = new JFrame("Testing");
            frame.setGlassPane(resultPane);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLayout(new BorderLayout());
            frame.add(new CalculatorPane(resultPane));
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
            frame.setBounds(200,200,500,400);

        }
    });
}

public class ResultPane extends JPanel {

    private JLabel result;
    private Timer timer;

    private int xDelta …