Instructions for Part 2 In part 2 (and probably in every part) I'm going to use "matrix" and "two-dimensional array" interchangeably. In part 2 we will read in the data from file, prepare ThreadOperation for part 3 by adding inputs, and add another helper method to verify we can access the submatrices accurately. 1. Modify Threadoperation to take as input (through the constructor) two matrices and a quadrant indicator. The indicator could be a String, an int, an enum or a set of indexes. It's up to you. 2. Modify the main method to instantiate the four ThreadOperation objects with placeholder values to confirm that the code still runs without error. The placeholders are just example matrices and a quadrant indicator. 3. Write a static method named printSubmatrix that takes four integer indexes and a matrix and prints out the submatrix indicated by the indexes. 4. Create a matrix and use it to test printSubmatrix in main. Your print2dArray method from part 1 should come in handy for this. 5. The filename should be given through the command prompt and passed into main via String[] args 6. Open and connect to the file using a Scanner. 7. Read in the number of rows and columns and save these in local variables in main. 8. Read in the first and second matrices (two-dimensional arrays) from the file. I recommend writing a method to accomplish this task and calling the method twice (once for each matrix). Consider using this method header:

Is there a difference between the void and the NULL pointers? Your response should provide relevant instances to support it. Distinguish between the two in TABULAR format.

I need the code from start to end with no errors and the explanation for the code ObjectivesJava refresher (including file I/O)Use recursionDescriptionFor this project, you get to write a maze solver. A maze is a two dimensional array of chars. Walls are represented as '#'s and ' ' are empty squares. The maze entrance is always in the first row, second column (and will always be an empty square). There will be zero or more exits along the outside perimeter. To be considered an exit, it must be reachable from the entrance. The entrance is not an exit.Here are some example mazes:mazeA7 9# # ###### # #   ## # # #### #     ## ##### ##       ########## RequirementsWrite a MazeSolver class in Java. This program needs to prompt the user for a maze filename and then explore the maze. Display how many exits were found and the positions (not indices) of the valid exits. Your program can display the valid exits found in any order. See the examples below for exact output requirements. Also, record…

Nonscalar types, such as arrays, records (structures), and variant records (unions) also contain information. The rules for information flow classes for these data types are built on the scalar types. Consider the array a: array 1 .. 100 of int; First, look at information flows out of an element a[i] of the array. In this case, information flows from a[i] and from i, the latter by virtue of the index indicating which element of the array to use. Information flows into a[i] affect only the value in a[i], and so do not affect the information in i. Thus, for information flows from a[i], the class involved is lub{ a[i], i }; for information flows into a[i], the class involved is a[i]. Above is the infromation flow security mechanism for arrays similarly write one for structures/Records. Below is the small info on Structures. The structure consists of several fields, each of which acts like a variable. Say you have a structure with two integer fields, x and y. You want to assign the value…

This question was rejected because lack of a text file, which I do not see a way to upload. I saved the first part of the file as an image because that is all I can upload. If that doesn't suffice, please advise how to include a text file. In C++, I would like some help improving or making a better password lookup function for a Hash Table class/program I made,  The function:   it is supposed to lookup a user password using their ID and name which I read in from a text file. The one I have only works for the first 10 records, which I highlighted below in the program. string lookupPassword (string inUserID, string inUserName){ string thePassword; ... return thePassword; } Here is part of the program thus far: // Hash.cpp  #include <iostream>#include<string>#include<iomanip>#include<fstream>using namespace std;//node classclass nodeBST {private:    //user data    string userID;    string userName;    string userPW;    //BST left and right children    nodeBST*…

/*TASK 5. Implement part 1 of the report.  You need to read data from input.txt file, store it into array of items (called items) and write it in a formatted form to the output file. Code, debug and present it in the best possible format. Hint: It might be helpful to format the String coming from toString( ) method using String.format( ) method, which works similar to System.out.prinf. Hint2: You might have to close and delete existing output .doc or .txt file from its folder * public class YourUserName_hw7 {    static Item [ ] items = new Item [200];//an array of Items    static EdibleItem [ ] edibleItems;//an array of Edible Items    static int countEdibleitems = 0;//count edible items    static String pageHeader; //save the header            //main( ) method runs the program    public static void main(String[ ] args) throws FileNotFoundException {       double sum = 0, average = 0;       //Optional - create a new input file        //CreateInput.createInputFile( );…

We wish to implement a system that allows the management of Employees and Students. As a first step. you need to implement the above UML diagrams Notes: . ZOOM . PERSON, EMPLOYEE and STUDENT should be public static constants The no-arg constructor will initialize ID, firstName and lastName to their respective null values. It will set personType to PERSON, and sortorder to LAST_NAME The overloaded constructor will assign each parameter to its respective field. sortorder will also be set to LAST_NAME toString() will output type, ID, firstName and lastName, all tab separated. This is an override method equals() will compare if the current object and the parameter contain the same values. This is an override method compareTo() compares the current object and the parameter. This is an override method. It will be used to sort objects Needs the Comparable interface O Will only compare fields depending on the sortorder. For example, if the sortorder is TYPE, it should then compare the…

Please complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } b) Implement a comparator called CompareCarsByDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByDescendingMPG should return a value that will cause quicksort to sort an array of cars in descending order (from largest to smallest) by mpg.

how would you do this in a simple way? this is a non graded practice lab

It says that 'readmatrix' is undefined. Do I need to use dlmread()? My original question was more if I had a file with entries, how do I throw them into a matrix?