how to fix error: java: unreported exception java.io.IOException; must be caught or declared to be thrown   import java.io.*; public class FileOperator {         private File m_file;         public FileOperator()     {         String fileName = "employeeData.txt";         m_file = new File(fileName);     }         public void writeFile(Employee[] employees)     {               FileWriter filewriter = new FileWriter (m_file, true);         try         {             for(int i=0; i < employees.length ; i++)                 if (employees[i] instanceof Faculty)                 {                     String str = "F-" + employees[i].getPaycheck();                     filewriter.write(str);                 }                 else                 {                     String str = "S-" + employees[i].getPaycheck();                     filewriter.write(str);                 }             filewriter.close();         }         catch(IOException e)         {             System.out.println("File not found");         }     } }

FilelO 01: Write a Message Write a FileI001 class with a method named writeMessage() to takes message as a String and a filename (as a String) (in that order). Have the method, write the message to the filename. Your code will either need to 1) catch all checked exceptions or 2) use the throws keyword. public class FileI001{ public void writeMessage( String message, String filename ){

createDatabaseOfProfiles(String filename) This method creates and populates the database array with the profiles from the input file (profile.txt) filename parameter. Each profile includes a persons' name and two DNA sequences. 1. Reads the number of profiles from the input file AND create the database array to hold that number profiles. 2. Reads the profiles from the input file. 3. For each person in the file 1. creates a Profile object with the information from file (see input file format below). 2. insert the newly created profile into the next position in the database array (instance variable).

Exception Project JAVA Create a Java program that searches for a student’s ID or name in a text file, complete the findID() and findName() functions. Then, insert a try/catch statement in main() to catch any exceptions thrown by findID() or findName(), and output the exception message. Each line in the text file contains a name and ID separated by a space. Function findID() has two parameters: a student's name (string) and the text file's contents (infile, input file variable). The function findID() returns the ID associated with the student's name if the name is in the file, otherwise the function throws a runtime error with the message "Student ID not found for studentName", where studentName is the name of the student. Function findName() has two parameters: a student's ID (string) and the text file's contents (infile). The function findName() returns the name associated with the student's ID if the ID is in the file, otherwise the function throws a runtime error with the message…

file operator code 1 // The FileOperator class that includes methods for file input and output 2 // Your name 3 import java.io.*; 4 public class FileOperator 5 { 6 // instance variables 7 private File m_file; 8 9 // constructor 10 // Do not make any changes to this method! 11 public FileOperator() 12 { 13 String fileName = "employeeData.txt"; 14 m_file = new File(fileName); 15 } 16 17 // This method writes an array of Employees into a physical file. 18 // Each line is in this format: "S-Optimus Prime-Computer Science-$1200" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }

Instructions: Exception handing Add exception handling to the game (try, catch, throw). You are expected to use the standard exception classes to try functions, throw objects, and catch those objects when problems occur.  At a minimum, you should have your code throw an invalid_argument object when data from the user is wrong.    File GamePurse.h: class GamePurse { // data int purseAmount; public: // public functions GamePurse(int); void Win(int); void Loose(int); int GetAmount(); };   File GamePurse.cpp: #include "GamePurse.h" // constructor initilaizes the purseAmount variable GamePurse::GamePurse(int amount){      purseAmount = amount; } // function definations // add a winning amount to the purseAmount void GamePurse:: Win(int amount){      purseAmount+= amount; } //  deduct an amount from the purseAmount. void  GamePurse:: Loose(int amount){      purseAmount-= amount; }   // return the value of purseAmount. int GamePurse::GetAmount(){      return purseAmount; }   File…

file operator code 1 // The FileOperator class that includes methods for file input and output 2 // Maham Hameed 3 import java.io.*; 4 public class FileOperator 5 { 6 // instance variables 7 private File m_file; 8 9 // constructor 10 // Do not make any changes to this method! 11 public FileOperator() 12 { 13 String fileName = "employeeData.txt"; 14 m_file = new File(fileName); 15 } 16 17 // This method writes an array of Employees into a physical file. 18 // Each line is in this format: "S-Optimus Prime-Computer Science-$1200" 19 // "S" represents StudentWorker ("F" represents Faculty) 20 public void writeFile(Employee[] employees) 21 { 22 // TODO: implement this method 23 } 24 }

Simple try-catch Program This lab is a simple program that demonstrates how try-catch works. You will notice the output when you enter incorrect input (for example, enter a string or double instead of an integer). Type up the code, execute and submit the results ONLY. Do at least 2 valid inputs and 1 invalid. NOTE: The program does not stop executing after it encounters an error! CODE: import java.util.Scanner; public class TryCatch Example Simple { public static void main(String[] args) { Scanner input = new Scanner(System.in); int num = 0; System.out.println("Even number tester.\n"); System.out.println("Enter your name: "); String name = input.nextLine(); while (true) { try { System.out.println("Enter an integer : ");

What is a throw point? 2.  What is an exception handler? 3.  Explain the difference between a try block and a catch block. 4.  What happens if an exception is thrown, but not caught? 5.  Complete the following function that searches a numeric array for a specified value. The function should return the subscript of the element containing the value if it is found in the array. If the value is not found, the function should throw an exception.   int searchArray(int array[], int size, int value){   int index = 0;      // Used as an index to search array   int subscript = -1;  // To record position of search value   while (index < size && subscript == -1)     {                if (array[index] == value) // If the value is found                ___________________________________________________                ___________________________________________________    }   if (subscript == -1)                 ___________________________________________________ return subscript; }   Bonus…

Time Converter 1. Write a program that converts dates from a numerical month-day format to alphabetic month-day format. IE 1/31 or 01/31 would have an output of January 31. 1. User enters the month and day as a single string. It is then converted. (10%) 2. Create 2 exception classes (20%) 1. MonthException thrown for invalid months 2. DayException-thrown for invalid days for the given month 3. You can assume Feb is always 28 days 2. This should run in a for loop and end when a user is done entering dates (70%)