import java.awt.*;

public class ShapesApplication extends Frame {
   static final String message = "Shapes!";
   private Font myFont;

   ShapesApplication(String str) {
     super(str);
     myFont = new Font("Helvetica", Font.BOLD, 36);
   }
   public static void main(String[] argv) {
    	ShapesApplication sa = 
                 new ShapesApplication("Shapes Example");
    	sa.setSize(400,300);
	sa.show();
   }
public void paint(Graphics g) {
   g.setColor(Color.black);
   g.setFont(myFont); // set Helvetica font
   g.setColor(Color.black);
   g.drawString(message, 150, 130); // draw the text      
   g.drawRect(10, 50, 80, 50); // draw two rectangles
   g.fillRect(10, 130, 80, 130);
   g.drawLine(100, 50, 180, 100); // draw one line
   int[] xPoints = {100, 120, 135, 160, 130};
   int[] yPoints = {70, 100, 160, 180,  100};
   g.drawPolyline(xPoints, yPoints, 5); 
   g.drawRoundRect(200, 50, 70, 50, 30, 30); 
   g.fillRoundRect(280, 50, 100, 50, 30, 30);     
   g.drawOval(200, 130, 50, 80); // draw 2 ovals    
   g.fillOval(270, 130, 100, 100); // draw 2 arcs
   g.drawArc(100, 200, 50, 70, 100, 100); 
   g.fillArc(150, 200, 80, 100, 130, 130);
  }  
  public boolean handleEvent(Event e) {
    if (e.id == Event.WINDOW_DESTROY) {
	dispose();
	System.exit(0);
	return true;
    }
    return super.handleEvent(e);
  }	    
} // end class
      

import java.awt.*;
public class FontViewer extends Frame {
	public FontViewer(String s) {
	  super(s);
	}

// Available font names
String[] fontNames = {"Serif", "SansSerif",
         "Monospaced", "Dialog", "DialogInput"};

// Available styles names
String[] styleNames = {"Plain", "Italic", "Bold", "Bold Italic"};
int[] styles = {Font.PLAIN, Font.ITALIC, Font.BOLD,
                Font.ITALIC + Font.BOLD};
public void paint(Graphics g) {
 for (int fontNumber=0;fontNumber<fontNumber.length; fontNumber++) {
   for (int styleNumber=0; styleNumber < styles.length; styleNumber++) {
            Font f = new Font(fontNames[fontNumber],styles[styleNumber], 16);
	      String s = fontNames[fontNumber] + " " + styleNames[styleNumber];
	      g.setFont(f);
	      g.drawString(s, 10, (fontNumber*4 + styleNumber + 2) * 20);
	}
 }
}
public static void main(String[] args) {
	FontViewer myFontViewer = new FontViewer("Java's Fonts");
	myFontViewer.setSize(300,450);  myFontViewer.show();
}
} // end FontViewer

      

- Applet is a class in java.applet that has a lengthy hierarchy chain…

- The simplest Applet:

import java.applet.*;
public class My_Applet extends Applet {
}

import java.awt.*;
import java.applet.*;

public class HWApplet extends Applet {
    static final String message = "Hello World!";
    private Font myFont;

    public void init() {
       myFont = new Font("Helvetica", Font.BOLD, 48);
       setSize(350,130);
    }

    public void paint(Graphics g) {    
       // draw the black border of rectangle. 
       g.setColor(Color.black);
       g.drawRect(9, 9, 332, 102);  
       g.drawRect(8, 8, 334, 104);  
       g.drawRect(7, 7, 336, 106);        
       // lightgray rectangle
       g.setColor(Color.lightGray);
       g.fillRect(10, 10, 330, 100);
       // set the Helvetica font
       g.setFont(myFont);        
       // draw the shadow of the text
       g.setColor(Color.gray);
       g.drawString(message, 40, 75);       
       // draw the text
       g.setColor(Color.black);
       g.drawString(message, 37, 72);
    }
} // end class

import java.awt.*; //Import Classes of awt

public class Scribble extends Frame {

    private int last_x, last_y; //Last coordinates

    public Scribble(String _name) {
         super(_name); //To pass the title 
    } 
    // This method gets called each time the user
    // clicks on our Scribble-Frame
    public boolean mouseDown(Event e, int x, int y) {
       last_x = x;
       last_y = y;
       return true;
    } // end mouseDown

    // This method gets called each time the mouse gets dragged
    public boolean mouseDrag(Event e, int x, int y) {
       Graphics g = this.getGraphics();
       g.drawLine(last_x, last_y, x, y);
       last_x = x;
       last_y = y;
       return true;
    } // end method mouseDrag

    //This is the "entry point" where we instantiate an object
    //of type Scribble
    public static void main(String args[]) {
       Scribble my_scribble = new Scribble("Example Scribble");
       my_scribble.resize(200,200);
       my_scribble.show();
    } // end main

} //end Class Scribble