Tuesday, December 23, 2014

Display text in different fonts

import java.awt.*;

import java.awt.event.*

import javax.swing.*

public class Main extends JPanel

{

String[] type = { "Serif","SansSerif"};

int[] styles = { Font.Plain, Font.Italic, Font.Bold,

Font.Italic + Font.Bold };

String[] stylenames =

{ "Plain", "Italic", "Bold", "Bold & Italic" };

public void paint(Graphics g)

{

for (int f = 0; f < type.length; f++)

{

for (int s = 0; s < styles.length; s++)

{

Font font = new Font(type[f], styles[s], 18);

g.setFont(font);

String name = type[f] + " " + stylenames[s];

g.drawString(name, 20, (f * 4 + s + 1) * 20);

}

public static void main(String[] a)

{

JFrame f = new JFrame();

f.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

);

f.setContentPane(new Main());

f.setSize(400,400);

f.setVisible(true);

}

Display line using GUI

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.Line2D;

import javax.swing.JApplet;

import javax.swing.JFrame;

public class Main extends JApplet

   public void init()

      setBackground(Color.white);

      setForeground(Color.white);

   public void paint(Graphics g)

      Graphics2D g2 = (Graphics2D) g;

      g2.setRenderingHint(RenderingHints.key_antialiasing,

      RenderingHints.value_antialias_on);

      g2.setPaint(Color.gray);

      int x = 5;

      int y = 7;

      g2.draw(new Line2D.Double(x, y, 200, 200));

      g2.drawString("Line", x, 250);

   public static void main(String s[])

      JFrame f = new JFrame("Line");

      f.addWindowListener(new WindowAdapter()

         public void windowClosing(WindowEvent e)

            System.exit(0);

});

      JApplet applet = new Main();

      f.getContentPane().add("Center", applet);

      applet.init();

      f.pack();

      f.setSize(new Dimension(300, 300));

      f.setVisible(true);

Create a frame

import java.awt.*;

import java.awt.font.FontRenderContext;

import java.awt.geom.Rectangle2D;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class Main extends JPanel

   public void paint(Graphics g)

      Graphics2D g2 = (Graphics2D) g;

      g2.setRenderingHint(RenderingHints.key_antialiasing,

      RenderingHints.value_antialias_on);

      g2.setFont(new Font("Serif", Font.PLAIN, 48));

      paintHorizontallyCenteredText(g2, "Java Source", 200, 75);

      paintHorizontallyCenteredText(g2, "and", 200, 125);

      paintHorizontallyCenteredText(g2, "Support", 200, 175);

   protected void paintHorizontallyCenteredText(Graphics2D g2,

   String s, float centerX, float baselineY)

      FontRenderContext frc = g2.getFontRenderContext();

      Rectangle2D bounds = g2.getFont().getStringBounds(s, frc);

      float width = (float) bounds.getWidth();

      g2.drawString(s, centerX - width / 2, baselineY);

   public static void main(String[] args)

      JFrame f = new JFrame();

      f.getContentPane().add(new Main());

      f.setSize(450, 350);

      f.setVisible(true);