如何在 Java 应用程序底部创建一个栏，如状态栏？

How can I create a bar in the bottom of a Java app, like a status bar?

提问by Paintrick

I am in the process of creating a Java app and would like to have a bar on the bottom of the app, in which I display a text bar and a status (progress) bar.

我正在创建一个 Java 应用程序，并希望在应用程序底部有一个栏，我在其中显示一个文本栏和一个状态（进度）栏。

Only I can't seem to find the control in NetBeans neither do I know the code to create in manually.

只有我似乎无法在 NetBeans 中找到控件，我也不知道要手动创建的代码。

采纳答案by krock

Create a JFrame or JPanel with a BorderLayout, give it something like a BevelBorderor line border so it is seperated off from the rest of the content and then add the status panel at BorderLayout.SOUTH.

创建一个带有 BorderLayout 的 JFrame 或 JPanel，给它一个类似BevelBorder或线边框的东西，这样它就与其余的内容分开，然后在 BorderLayout.SOUTH 添加状态面板。

JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());
frame.setSize(200, 200);

// create the status bar panel and shove it down the bottom of the frame
JPanel statusPanel = new JPanel();
statusPanel.setBorder(new BevelBorder(BevelBorder.LOWERED));
frame.add(statusPanel, BorderLayout.SOUTH);
statusPanel.setPreferredSize(new Dimension(frame.getWidth(), 16));
statusPanel.setLayout(new BoxLayout(statusPanel, BoxLayout.X_AXIS));
JLabel statusLabel = new JLabel("status");
statusLabel.setHorizontalAlignment(SwingConstants.LEFT);
statusPanel.add(statusLabel);

frame.setVisible(true);

Here is the result of the above status bar code on my machine:

这是我机器上上述状态条码的结果：

回答by Simon

Unfortunately Swing does not have a native support for StatusBars. You can use a BorderLayoutand a label or whatever you need to display at the bottom:

不幸的是，Swing 没有对 StatusBar 的原生支持。您可以使用一个BorderLayout和一个标签或任何您需要在底部显示的内容：

public class StatusBar extends JLabel {

    /** Creates a new instance of StatusBar */
    public StatusBar() {
        super();
        super.setPreferredSize(new Dimension(100, 16));
        setMessage("Ready");
    }

    public void setMessage(String message) {
        setText(" "+message);        
    }        
}

Then in your Main Panel:

然后在您的主面板中：

statusBar = new StatusBar();
getContentPane().add(statusBar, java.awt.BorderLayout.SOUTH);

From: http://www.java-tips.org/java-se-tips/javax.swing/creating-a-status-bar.html

来自：http: //www.java-tips.org/java-se-tips/javax.swing/creating-a-status-bar.html

回答by Richard Walton

I would recommend the status bar component in the SwingX library- Here is the API doc for the status bar is here

我会推荐SwingX 库中的状态栏组件- 这里是状态栏的 API 文档在这里

A good example of its use is here.

使用它的一个很好的例子是here。

Have fun.

玩得开心。

回答by arcamax

I have used swing library from L2FProd. The Status bar library they have provided is very good.

我使用了L2FProd 的Swing 库。他们提供的状态栏库非常好。

Below is how you would use it:

以下是您将如何使用它：

1. Download the JAR they are providing and put it in your classpath

2. The status bar internally divides the bar area into zone. Each zone can contain a Component (JLabel, JButton, etc). Idea is to fill the bar with required zones and the components.

3. Instantiate the status bar as below....

   import java.awt.Component;
   import javax.swing.BorderFactory;
   import javax.swing.JLabel;
   import com.l2fprod.common.swing.StatusBar;
   
   StatusBar statusBar = new StatusBar();
   statusBar.setZoneBorder(BorderFactory.createLineBorder(Color.GRAY));
   statusBar.setZones(
       new String[] { "first_zone", "second_zone", "remaining_zones" },
       new Component[] {
           new JLabel("first"),
           new JLabel("second"),
           new JLabel("remaining")
       },
       new String[] {"25%", "25%", "*"}
   );
   

4. Now add the above statusBarto the main panel you have (BorderLayout and set it to the south side).

1. 下载他们提供的 JAR 并将其放在您的类路径中

2. 状态栏在内部将栏区域划分为区域。每个区域可以包含一个组件（JLabel、JButton 等）。想法是用所需的区域和组件填充栏。

3. 实例化状态栏如下....

   import java.awt.Component;
   import javax.swing.BorderFactory;
   import javax.swing.JLabel;
   import com.l2fprod.common.swing.StatusBar;
   
   StatusBar statusBar = new StatusBar();
   statusBar.setZoneBorder(BorderFactory.createLineBorder(Color.GRAY));
   statusBar.setZones(
       new String[] { "first_zone", "second_zone", "remaining_zones" },
       new Component[] {
           new JLabel("first"),
           new JLabel("second"),
           new JLabel("remaining")
       },
       new String[] {"25%", "25%", "*"}
   );
   

4. 现在将上述内容添加statusBar到您拥有的主面板（BorderLayout 并将其设置为南侧）。

See a sample screenshot from one of the apps I am working on here(it has 2 zones). Let me know if you face any issues....

查看我在这里工作的其中一个应用程序的示例屏幕截图（它有 2 个区域）。如果您遇到任何问题，请告诉我......

回答by t.animal

For a more modern look than the accepted answer go with a GridBagLayout and a JSeparator:

要获得比公认答案更现代的外观，请使用 GridBagLayout 和 JSeparator：

JPanel outerPanel = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.anchor = GridBagConstraints.PAGE_START;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.weighty = 0;

JPanel menuJPanel = new JPanel();
menuJPanel.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.RED));
outerPanel.add(menuJPanel, gbc);

gbc.insets = new Insets(5, 5, 5, 5);
gbc.fill = GridBagConstraints.BOTH;
gbc.weighty = 1;

JPanel contentJPanel = new JPanel();
contentJPanel.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.BLUE));
outerPanel.add(contentJPanel, gbc);

gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weighty = 0;
gbc.insets = new Insets(0, 0, 0, 0);

outerPanel.add(new JSeparator(JSeparator.HORIZONTAL), gbc);
outerPanel.add(new JPanel(), gbc);