如何设置 jlabel 的固定大小？

java swing null-layout-manager jlabel

2022-09-03 05:05:14

我正在尝试制作一个java桌面应用程序，其中我正在使用多个我想设置修复的高度和宽度。我怎样才能做到这一点？JLabelJLabel

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;
    }

当我减少文本大小或文本从那时大小减少，但我希望当我减少或删除任何文本从但大小 Jlabel 不应该减少它应该修复JLabelJLabelJLabel

我怎样才能得到这个？

提前致谢

答案 1

您可以通过设置最小、首选和最大大小来设置固定大小：

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

作为MadProgrammer的链接，您需要根据此链接中提到的原因覆盖这些方法，而不是从外部使用它们。

答案 2

如果此方法不起作用

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

然后使用它

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