如何设置jlabel的固定大小?

I am trying to make a java desktop application where I am using multiple JLabel I want to set fix height and width of JLabel. How can I achieve this?

我正在尝试创建一个java桌面应用程序，其中使用多个JLabel，我想设置JLabel的固定高度和宽度。我如何做到这一点?

Here is my code

这是我的代码

public class Second extends JFrame
{
    JPanel panel1,panel2;
    JLabel label=new JLabel();
    ArrayList<JLabel> lbllist = new ArrayList<>();

    public Second()  
    {
        super("Simple Timer");
        {
            getContentPane().setBackground(new java.awt.Color(255,255,255));
        } 
        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        Container c = getContentPane();
        c.setLayout( new FlowLayout());
        setUndecorated(true);
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        setBounds(0,0,screenSize.width, screenSize.height);

        panel2=new JPanel();
        panel2.setBounds(360, 180, 360, 1020);
        panel2.setBackground(new java.awt.Color(255,153,51));
        c.add(panel2);
        JPanel panel3 = createPanel();
        panel1.setLayout(new GridBagLayout());
        panel1.add(panel3);

        JPanel panel4 = createPanel(); 
        panel2.setLayout(new GridBagLayout());
    //  jPanel2.setLayout(null);
        panel2.add(panel4);

        setLayout(null);
   }

   private JPanel createPanel() {
        JPanel panel = new JPanel(new GridLayout(0, 1, 10, 5));
        EmptyBorder panelBorder = new EmptyBorder(10, 5, 10, 10);
        panel.setBorder(panelBorder);
        panel.setBackground(new java.awt.Color(255, 153, 51));
        panel.setOpaque(true);
        EmptyBorder border1 = new EmptyBorder(5, 20, 15, 18);

        Border border = BorderFactory.createLineBorder(Color.BLUE, 2);
        for (int i = 0; i <11; i++) {
            label = new JLabel("<html>Case &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Item&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CaseNum<br><font color=yellow>Party1<br>Party2</font></html>");
            label.setFont(new java.awt.Font("Times New Roman", 1, 18));
            label.setBorder(border);
            label.setSize(300, 100);
            label.setBorder(border1);
            Dimension d = label.getPreferredSize();
            label.setBackground(Color.GRAY);
            label.setForeground(new java.awt.Color(255, 255,255 ));
            label.setOpaque(true);
            lbllist.add(label);
            panel.add(label);
        }
        return panel;
    }

When I reduce text size or text from JLabel then size of JLabel reduced but I want that when i reduced or remove any text from JLabel but size of Jlabel should not reduced it should fix

当我减少JLabel的文本大小或文本大小时，JLabel的大小减小了，但是我希望当我减少或从JLabel中删除任何文本时，JLabel的大小不应该减小，应该进行修正

How can I get this?

我怎么能得到这个呢?

Thanks in advance

谢谢提前

4 个解决方案

#1

You can set a fixed the size by setting the minimum, preferred and maximum size:

您可以通过设置最小、首选和最大尺寸来设置一个固定的尺寸:

setMinimumSize(width, height);
setPreferredSize(width, height);
setMaximumSize(width, height);

As the Link from MadProgrammer, you need to override these methods, not using them from outside, based on the reasons mentioned in this link.

作为mad程序员的链接，您需要基于此链接中提到的原因，重写这些方法，而不是从外部使用它们。

#2

if this method not work

如果这个方法不起作用

setMinimumSize(width, height);
setPreferedSize(width, height);
setMaximumSize(width, height);

then use it

然后使用它

setMinimumSize(new Dimension(width, height));
setPreferedSize(new Dimension(width, height));
setMaximumSize(new Dimension(width, height));

#3

An easy work around (without overriding existing classes) is to;

一个简单的工作(不重写现有的类)是:

Create a JPanel specifically for the component

为组件创建一个JPanel
Set the size for the JPanel

设置JPanel的大小
Place the component within the JPanel

将组件放置在JPanel中
Place the JPanel where you would have originally placed the component

将JPanel放置在最初放置组件的位置

e.g.

如。

JPanel mainPanel = new JPanel(); //Assume this is the panel you are placing things into.

JLabel nameLabel = new JLabel("Name:");
JPanel nameLabelPanel = new JPanel();
nameLabelPanel.setPreferredSize(new Dimension(100, 25));
JPanel.add(nameLabel);
mainPanel.add(nameLabelPanel);

#4

Use JLabel.setPreferredSize(width, height); The jpanel does not have a layout, try Jpanel pane =new JPanel(new FlowLayout（））；

使用JLabel。setPreferredSize(宽度、高度);jpanel没有布局,试试jpanel窗格= new jpanel(新FlowLayout());

#1