Develop a program to draw a polygon.

Code:

Import java.applet.*;

importjava.awt.*;

public class Draw extends java.applet.Applet

{

intxCoords[] = { 50, 200, 300, 150, 50, 50 };

intyCoords[] = { 100, 0, 50, 300, 200, 100 };

public void paint(Graphics g)

{

g.drawString("Polygon",50,50);

g.drawPolygon(xCoords, yCoords, 6);

}

/* <applet code=Draw width=300 height=300>

</applet>

Output:

Comments

Program to calculate the room area and volume to illustrate the concept of single inheritance.

CODE: class Roomarea { protected double l, b; Roomarea(double len, double br) { l=len; b=br; } void putdata() { System.out.println("Area of Room: "+(l*b)); } } class Roomvol extends Roomarea { double h; Roomvol(double len, double br, double he) { super(len, br); h=he; } void putdata() { super.putdata(); System.out.println("Volume of Room: "+(l*b*h)); } } public class EXP18Q4 { public static void main(String[] args) { Roomvol r1 = new Roomvol(10, 20, 10); r1.putdata(); } }

Develop an applet for drawing a human face.

Code: import java.awt.*; importjava.applet.*; /* <applet code = "face" width = 300 height = 300></applet> */ public class face extends Applet { public void paint(Graphics g) { g.drawOval(40, 40, 120, 150); g.drawOval(57, 75, 30, 20); g.drawOval(110, 75, 30, 20); g.fillOval(68, 81, 10, 10); g.fillOval(121, 81, 10, 10); g.drawOval(85, 100, 30, 30); g.fillArc(60, 125, 80, 40, 180, 180); g.drawOval(25, 92, 15, 30); g.drawOval(160, 92, 15, 30); } } Output:

Develop a program using control loops in applets.

Code: import java.awt.*; import java.applet.*; public class Control extends Applet { public void paint(Graphics g) { for(int i=1;i<=4;i++) { if(i%2==0) { g.fillOval(90,i*50+10,50,50); g.setColor(Color.black); } else { g.fillOval(90,i*50+10,50,50); g.setColor(Color.red); } } } } /* <applet code=Control width=300 height=300> </applet> */ Output:

JAVA Practical

Search This Blog