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Line example



                             Line example in java

Lines

A line is a simple graphics primitive. It is drawn using two points.

package PRACTICEPROGRAM;
import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
class DrawPanel extends JPanel {
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
            float[] dash1 = { 2f, 0f, 2f };
            float[] dash2 = { 1f, 1f, 1f };
            float[] dash3 = { 4f, 0f, 2f };
            float[] dash4 = { 4f, 4f, 1f };
            g2d.drawLine(20, 40, 250, 40);
            BasicStroke bs1 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash1, 2f );
            BasicStroke bs2 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash2, 2f );
            BasicStroke bs3 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash3, 2f );
            BasicStroke bs4 = new BasicStroke(1, BasicStroke.CAP_BUTT,
                BasicStroke.JOIN_ROUND, 1.0f, dash4, 2f );
            g2d.setStroke(bs1);
            g2d.drawLine(20, 80, 250, 80);
            g2d.setStroke(bs2);
            g2d.drawLine(20, 120, 250, 120);
            g2d.setStroke(bs3);
            g2d.drawLine(20, 160, 250, 160);
            g2d.setStroke(bs4);
            g2d.drawLine(20, 200, 250, 200);
    }
}
public class LinesExample extends JFrame {
    public LinesExample() {
        initUI();
    }
    public final void initUI() {
        DrawPanel dpnl = new DrawPanel();
        add(dpnl);
        setSize(280, 270);
        setTitle("Lines");
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                LinesExample ex = new LinesExample();
                ex.setVisible(true);
            }
        });
    }
}

 

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