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How can we rotate a JLabel text in Java?
A JLabel is a subclass of JComponent class and an object of JLabel provides text instructions or information on a GUI. A JLabel can display a single line of read-only text, an image or both text and an image. A JLabel can explicitly generate a PropertyChangeListener interface.
By default, JLabel can display a text in the horizontal position and we can rotate a JLabel text by implementing the rotate() method of Graphics2D class inside the paintComponent().
Syntax
public abstract void rotate(double theta, double x, double y)
Example
import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
public class RotateJLabelTest extends JFrame {
public RotateJLabelTest() {
setTitle("Rotate JLabel");
JLabel label = new RotateLabel("TutorialsPoint");
add(label, BorderLayout.CENTER);
setSize(400, 300);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
private class RotateLabel extends JLabel {
public RotateLabel(String text) {
super(text);
Font font = new Font("Verdana", Font.ITALIC, 10);
FontMetrics metrics = new FontMetrics(font){};
Rectangle2D bounds = metrics.getStringBounds(text, null);
setBounds(0, 0, (int) bounds.getWidth(), (int) bounds.getHeight());
}
@Override
public void paintComponent(Graphics g) {
Graphics2D gx = (Graphics2D) g;
gx.rotate(0.6, getX() + getWidth()/2, getY() + getHeight()/2);
super.paintComponent(g);
}
}
public static void main(String[] args) {
new RotateJLabelTest();
}
}Output
Updated on: 03-Jul-2020
2K+ Views
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