Java如何在JTextArea中包装文本行？
要包装这些行，JTextArea我们需要调用setLineWrap(booleanwrap)方法并传递一个true布尔值作为参数。setWrapStyleWord(booleanword)当我们将其设置为时，该方法会在单词边界处换行true。
package org.nhooo.example.swing;
import javax.swing.*;
import java.awt.*;
public class TextAreaWrapDemo extends JPanel {
public TextAreaWrapDemo() {
initializeUI();
}
private void initializeUI() {
this.setLayout(new BorderLayout());
this.setPreferredSize(new Dimension(500, 200));
JTextArea textArea = new JTextArea(5, 40);
String text = "The quick brown fox jumps over the lazy dog. " +
"The quick brown fox jumps over the lazy dog. " +
"The quick brown fox jumps over the lazy dog.";
textArea.setText(text);
textArea.setFont(new Font("Arial", Font.BOLD, 18));
//如果JTextArea不合适，请换行
//当前分配的JTextArea。
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
JScrollPane scrollPane = new JScrollPane(textArea);
this.add(scrollPane, BorderLayout.CENTER);
}
public static void showFrame() {
JPanel panel = new TextAreaWrapDemo();
panel.setOpaque(true);
JFrame frame = new JFrame("JTextArea Demo");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TextAreaWrapDemo.showFrame();
}
});
}
}上面的代码片段的输出是：