FontMetrics.bytesWidth(byte[] data, int off, int len) has the following syntax.
public int bytesWidth(byte[] data, int off, int len)
In the following code shows how to use FontMetrics.bytesWidth(byte[] data, int off, int len) method.
import java.awt.FontMetrics; // w w w.ja v a2 s.c om import javax.swing.JFrame; public class Main { public static void main(String args[]) { JFrame f = new JFrame("JColorChooser Sample"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setSize(300, 200); f.setVisible(true); FontMetrics metrics = f.getFontMetrics(f.getFont()); int widthX = metrics.bytesWidth(new byte[]{66, 67, 68,69}, 1,2); System.out.println(widthX); } }