Question

假设我有一个字符串和JLabel，JLabel显示在JFrame上：

public String content="Hello fellow stack-overflowers, I want to format this output";
public JLabel jL = new JLabel();

执行以下操作后：

jL.setText(content);

我得到了这个输出：

Hello fellow stack-overflowers, I want to for..

但我真正想要的是文字不要超越标签或文本字段的长度，而是要创建一个换行符，如下所示：

Hello fellow stack-overflowers, I want
to format this output

询问是否需要更多信息。

Answer 1

一种可能的解决方案是将标签文本包装在HTML标签中，并允许底层布局管理器调整其大小，例如......

Label Test

import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class Test100 {

    public static void main(String[] args) {
        new Test100();
    }

    public Test100() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try {
                    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
                    ex.printStackTrace();
                }

                JFrame frame = new JFrame("Testing");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public class TestPane extends JPanel {

        private JLabel label;
        private JTextField textField;

        public TestPane() {
            label = new JLabel("<html>Hello fellow stack-overflowers, I want to format this output</html>");
            textField = new JTextField(10);

            setLayout(new GridBagLayout());
            GridBagConstraints gbc = new GridBagConstraints();
            gbc.gridx = 0;
            gbc.gridy = 0;
            gbc.anchor = GridBagConstraints.NORTHWEST;

            add(label);

            gbc.gridx = 1;
            gbc.fill = GridBagConstraints.HORIZONTAL;
            gbc.weightx = 1;
            add(textField, gbc);
        }

    }

}

这个例子说明了压缩标签分裂的方法，你可能需要稍微调整一下这些值......

如何格式化JLabel / JTextField以使文本换行

1 个答案: