BCSL-043 Java Programming Lab Solved Assignment 2019-20 PDF

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www.techiya.in BCA Solved Assignment 2019-20 Course Code : BCSL-043 Course Title : Java Programming Lab Assignment Number: BCA(4)/BCSL-043/Assignment/2019-20

Q1. Write java program to find the factorial of a given number. Define appropriate class and methods in your program. Ans: import java.util.Scanner; class Factorial{ public static void main(String args[]){ //Scanner object for capturing the user input Scanner scanner = new Scanner(System.in); System.out.println("Enter the number:"); //Stored the entered value in variable int num = scanner.nextInt(); //Called the user defined function fact int factorial = fact(num); System.out.println("Factorial of entered number is: "+factorial); } static int fact(int n) { int output; if(n==1){ return 1; } //Recursion: Function calling itself!! output = fact(n-1)* n; return output; } }

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Output:

Q2. Write a program in java to read the content from a text file and count the number of words in the file. Ans: import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; public class FileWordCount { public static void main(String[] args) throws IOException { File f1=new File("input.txt"); //Creation of File Descriptor for input file String[] words=null; //Intialize the word Array int wc=0; //Intialize word count to zero FileReader fr = new FileReader(f1); //Creation of File Reader object

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BufferedReader br = new BufferedReader(fr); //Creation of BufferedReader object String s; while((s=br.readLine())!=null) //Reading Content from the file { words=s.split(" "); //Split the word using space wc=wc+words.length; //increase the word count for each word } fr.close(); System.out.println("Number of words in the file:" +wc); //Print the word count } } Output:

Q3. Create an applet which take a number as input. If the number is between 11-90 and is an even number then display its table otherwise ask for other number as input. Ans: GenerateTable.java import java.applet.*; 3 www.techiya.in

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import java.awt.*; import java.awt.event.*; public class GenerateTable extends Applet { int count,n,i; TextField t1; public void init() { t1 = new TextField(10); add(t1); t1.setText(""); } public void paint(Graphics g) { String str; g.drawString("Enter the number",100,20); try { str=t1.getText(); n=Integer.parseInt(str); } catch(Exception e) { } if(n>=1 && n...