BCSL043 June 2016 Set 4 Solution

Question 1- Write a Java program to create an applet to generate table of a given number between 1 to 20. If number is out of this range ask for new input for the number.

Solution -


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

public class print_table extends Applet implements ActionListener

{

String str="";

Font f1 = new Font("Arial",Font.BOLD,18);

Label l1 = new Label("Whose table you want to print");

TextField t1 = new TextField(2);

Button b1 = new Button("Print");

 int table;

    public void init()

    {

    add(l1);

    add(t1);

    add(b1);

    b1.addActionListener(this);

    }

    public void paint(Graphics g)

    {

    g.setFont(f1);

        int ypos=70;

    if(table>0 && table<21)

    {

    for(int i=1;i<=10;i++)

        {

        str = table+"X"+i+"="+table*i;

    g.drawString(str,150,ypos);

    ypos +=20;

        }

    }

    else

    {

    str ="Please enter the number between 1-20";

    g.setColor(Color.red);

    g.drawString(str,20,ypos);

    }

    }

    public void actionPerformed(ActionEvent e)

    {

    table = Integer.parseInt(t1.getText());

        repaint();

    }

}

/*

<applet code="print_table.class" width="400" height="400"></applet>

*/

filename:   print_table.java

For compiling the file type this command in cmd: javac print_table.java
For execution of the file use this command: appletviewer print_table.java

Note: Do not forgot to add this code
 /*<applet code="print_table.class" width="330" height="350"></applet>*/

in applet program otherwise applet program will not run;

Output:

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