Java 如何设置 jlabel 的固定大小？
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How to set fix size of jlabel?
提问by user3506824
I am trying to make a java desktop application where I am using multiple JLabelI want to set fix height and width of JLabel. How can I achieve this?
我正在尝试制作一个 java 桌面应用程序，我在其中使用多个JLabel我想设置JLabel. 我怎样才能做到这一点？
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 Item 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 JLabelthen size of JLabelreduced but I want that when i reduced or remove any text from JLabelbut size of Jlabel should not reduced it should fix
当我减少文本大小或文本JLabel大小时，JLabel我希望当我减少或删除任何文本时，JLabel但 Jlabel 的大小不应该减少它应该修复
How can I get this?
我怎样才能得到这个？
Thanks in advance
提前致谢
采纳答案by Salah
You can set a fixed the size by setting the minimum, preferred and maximum size:
您可以通过设置最小、首选和最大大小来设置固定大小：
setMinimumSize(width, height);
setPreferredSize(width, height);
setMaximumSize(width, height);
As the Linkfrom MadProgrammer, you need to override these methods, not using them from outside, based on the reasons mentioned in this link.
回答by PotatoPhil
Use JLabel.setPreferredSize(width, height);The jpanel does not have a layout, try Jpanel pane =new JPanel(new FlowLayout（））；
使用JLabel.setPreferredSize(width, height);jpanel 没有布局，试试 Jpanel pane =new JPanel(new FlowLayout（））；
回答by Avanish Kumar
if this method not work
如果这个方法不起作用
setMinimumSize(width, height);
setPreferredSize(width, height);
setMaximumSize(width, height);
then use it
然后使用它
setMinimumSize(new Dimension(width, height));
setPreferredSize(new Dimension(width, height));
setMaximumSize(new Dimension(width, height));
回答by Wako
An easy work around (without overriding existing classes) is to;
一个简单的解决方法（不覆盖现有类）是；
Create a JPanel specifically for the component
Set the size for the JPanel
Place the component within the JPanel
Place the JPanel where you would have originally placed the component
专门为组件创建一个JPanel
设置 JPanel 的大小
将组件放置在 JPanel 中
将 JPanel 放置在您最初放置组件的位置
e.g.
例如
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);
