Question

我在Netbeans中有一个JPanel表单，它上面有Jlists，JTextFields和JPanels。我想将JFrame分成四个（或六个或八个......）部分，并将这个JPanel表单放入其中。我想象我想做的工作here。

我尝试过BorderLayout，GridLayout和GridBagLayout。但是在其中任何一个中，JPanel和组件（Jlists，JTextFields和JPanels）都不会改变它们的大小，只显示它的一部分。

public class DynamicLineAndTimeSeriesChart extends ApplicationFrame implements ActionListener {

private TimeSeries series;
private double lastValue = 100.0;
private Timer timer = new Timer(10000, this);
GaugePanel panel; //*****That's the JPanel form I created by using NetBeans*****
//Note that GaugePanel extends javax.swing.JPanel
final ChartPanel chartPanel;//*****Since I need an xy-graph, I import jfree library
private Timer timer2 = new Timer(10000, this);
GaugePanel panel2;
final ChartPanel chartPanel2;

/**
 * Constructs a new dynamic chart application.
 *
 * @param title the frame title.
 */
public DynamicLineAndTimeSeriesChart(final String title) throws IOException {
    super(title);
    JFrame.setDefaultLookAndFeelDecorated(true);
    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    setSize(screenSize.width, screenSize.height);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.series = new TimeSeries("Random Data", Millisecond.class);
    JPanel bigpanel=new JPanel();
    GridLayout experimentLayout = new GridLayout(2,2);
    bigpanel.setLayout(experimentLayout);

    final TimeSeriesCollection dataset = new TimeSeriesCollection(this.series);              
    final JFreeChart chart = createChart(dataset);
    timer.setInitialDelay(1000);
    chart.setBackgroundPaint(Color.LIGHT_GRAY);
    panel = new GaugePanel();
    panel.init();
    chartPanel = new ChartPanel(chart);
    panel.getjPanel1().add(chartPanel);
    chartPanel.setPreferredSize(new java.awt.Dimension(367, 336));
    bigpanel.add(panel);
    timer.start();
    panel.setVisible(true);
    chartPanel.setVisible(true);

    final TimeSeriesCollection dataset2 = new TimeSeriesCollection(this.series);              
    final JFreeChart chart2 = createChart(dataset2);
    timer2.setInitialDelay(1000);
    chart2.setBackgroundPaint(Color.LIGHT_GRAY);
    panel2 = new GaugePanel();
    panel2.init();
    chartPanel2 = new ChartPanel(chart2);
    panel2.getjPanel1().add(chartPanel2);
    chartPanel2.setPreferredSize(new java.awt.Dimension(367, 336));
    bigpanel.add(panel2);
    timer2.start();
    panel2.setVisible(true);
    chartPanel2.setVisible(true);

    setContentPane(bigpanel);

    repaint();
    setVisible(true);
}

Answer 1

我相信这段代码会帮助您实现您想要实现的目标。了解一个组件只能有一个父组件（即只添加一个组件），并且将多次添加到同一个Container与删除它并再次添加它相同

JFrame f = new JFrame("Test");
f.getContentPane().setLayout(new GridLayout(2,2));
Color[] colors = new Color [Color.RED, COLOR.GREEN, COLOR.BLUE, COLOR.BLACK];
for (int i = 0; i < 4; i++) {
  JPanel jp = new JPanel();
  jp.setBackground(colors[i];
  f.getContentPane().add(jp);
}

在NetBeans GUI Builder中调整JPanel表单的大小

1 个答案: