Rajeshwari

 import java.io.*; import java.util.Scanner; class FS {     public static void main(String[] args) {         Scanner scanner = new Scanner(System.in);         String fileName = "msc1.txt";         int choice;         do {             System.out.println("\nFile Operations Menu:");             System.out.println("1. Create a File");             System.out.println("2. Write to the File");             System.out.println("3. Read from the File");             System.out.println("4. Update the File");             System.out.println("5. Delete the File");             System.out.print("Enter your choice: ");             choice = scanner.nextInt();     ...

 import java.io.*; import java.util.Scanner; class FS {     public static void main(String[] args) {         Scanner scanner = new Scanner(System.in);         String fileName = "msc1.txt";         int choice;         do {             System.out.println("\nFile Operations Menu:");             System.out.println("1. Create a File");             System.out.println("2. Write to the File");             System.out.println("3. Read from the File");             System.out.println("4. Update the File");             System.out.println("5. Delete the File");             System.out.println("6. Exit");             System.out.print("Enter your choice: ");     ...

 import java.lang.*; import java.io.*; class Questions{ public String [][]qpa; public String[][]qca;  Questions()throws IOException { qpa=new String[10][5]; /*questionsandobjectives*/ DataInputStream in=new DataInputStream(System.in); qpa[0][0]="who is the father of the computer?"; qpa[0][1]="1.charles babbage"; qpa[0][2]="2.thomas edition"; qpa[0][3]="3. albert einsten";qpa[0][4]="4.isaac newton"; qpa[1][0]="what is the full form of email?"; qpa[1][1]="1.electric mail"; qpa[1][2]="2.exchange mail"; qpa[1][3]="3.electronic mail"; qpa[1][4]="4.engagement mail"; qpa[2][0]="in the virtual world, www stands for?"; qpa[2][1]="1.world without windows"; qpa[2][2]="2.world wide web"; qpa[2][3]="3.world wide web applications"; qpa[2][4]="4.world wide warehouse "; qpa[3][0]="who invented compact disc?"; qpa[3][1]="1.james t. russell...

 import java.lang.*; import java.io.*; class Questions{ public String [][]qpa; public String[][]qca;  Questions()throws IOException { qpa=new String[10][5]; /*questionsandobjectives*/ DataInputStream in=new DataInputStream(System.in); qpa[0][0]="keyboard?"; qpa[0][1]="1.input"; qpa[0][2]="2.java JavaProgram"; qpa[0][3]="3.javac JavaProgram.java";qpa[0][4]="4.No one"; qpa[1][0]="What is the use ofthe println method?"; qpa[1][1]="1.Itisusedtoprinttextonthescreen."; qpa[1][2]="2.Itisusedtoprinttextonthescreenwiththelinebreak."; qpa[1][3]="3.Itisusedtoreadtextfromkeyboard."; qpa[1][4]="4.Itisusedtoread textfromafile."; qpa[2][0]="Howtoreadacharacterfromthekeyboard?"; qpa[2][1]="1.char c=System.read()"; qpa[2][2]="2.char c=System.in.read()"; qpa[2][3]="3.char c=(char)System.read()"; qpa[2][4]="4.char c=(char)System.in.read()"; qpa[3][0]="...