import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
import javax.swing.JFrame;
import javax.swing.UIManager;
public class Main extends JFrame {
public void paint(Graphics g) {
String input = "this is a test.this is a test.this is a test.this is a test.";
AttributedString attributedString = new AttributedString(input);
attributedString.addAttribute(TextAttribute.FONT, (Font) UIManager
.get("Label.font"));
Color color = (Color) UIManager.get("Label.foreground");
attributedString.addAttribute(TextAttribute.FOREGROUND, color);
super.paint(g);
Graphics2D g2d = (Graphics2D) g;
int width = getSize().width;
int x = 10;
int y = 30;
AttributedCharacterIterator characterIterator = attributedString
.getIterator();
FontRenderContext fontRenderContext = g2d.getFontRenderContext();
LineBreakMeasurer measurer = new LineBreakMeasurer(characterIterator,
fontRenderContext);
while (measurer.getPosition() < characterIterator.getEndIndex()) {
TextLayout textLayout = measurer.nextLayout(width);
y += textLayout.getAscent();
textLayout.draw(g2d, x, y);
y += textLayout.getDescent() + textLayout.getLeading();
}
}
public static void main(String args[]) {
JFrame frame = new Main();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.setSize(20, 200);
frame.setVisible(true);
}
}