FontMetrics.charWidth(int codePoint) has the following syntax.
public int charWidth(int codePoint)
In the following code shows how to use FontMetrics.charWidth(int codePoint) method.
// ww w . j av a2s. com import java.awt.FontMetrics; 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.charWidth((int)'C'); System.out.println(widthX); } }