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How can we implement line wrap and word wrap text inside a JTextArea in Java?
A JTextArea is a multi-line text component to display text or allow the user to enter the text and it will generate a CaretListener interface when we are trying to implement the functionality of the JTextArea component. A JTextArea class inherits the JTextComponent class in Java.
In the below example, we can implement a JTextArea class with a user can select either word wrap or line wrap checkboxes using the ItemListener interface.
Example
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class JTextAreaTest {
public static void main(String[] args ) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("JTextArea Test");
frame.setSize(350, 275);
final JTextArea textArea = new JTextArea(15, 65);
frame.add(new JScrollPane(textArea));
final JCheckBox wordWrap = new JCheckBox("word wrap");
wordWrap.setSelected(textArea.getWrapStyleWord());
wordWrap.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent ie) {
textArea.setWrapStyleWord(wordWrap.isSelected());
}
});
frame.add(wordWrap, BorderLayout.NORTH);
final JCheckBox lineWrap = new JCheckBox("line wrap");
lineWrap.setSelected(textArea.getLineWrap());
lineWrap.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent ie) {
textArea.setLineWrap(lineWrap.isSelected());
}
});
frame.add(lineWrap, BorderLayout.SOUTH );
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
frame.setVisible(true);
}
});
}
}Output
Updated on: 07-Feb-2020
613 Views
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