Need help with java problem. Start with the java file below and add the following methods:1. Add the methodpublic int getLastIndex(T item) which returns the index of the last entry which is equal to item. If item is not found, it returns -1. 2. Add the method public boolean equals(Object other) that returns true when the contents of 2 objects are the same. java file:

Write the code in java and please don't plagiarize or copy from other sources write it on your own. Read carefully and follow the instructions in the question. Thank you.

I have the following code: import java.util.*; import java.io.*; public class GradeBook { publicstaticvoidmain(String[] args)throwsIOException{ // TODO Auto-generated method stub File infile =newFile("students.dat"); Scanner in =newScanner(infile); while(in.hasNext()){ // Read information form file and create a student object and print String name = in.nextLine(); Student student =newStudent(name, in.nextLine()); for(int i =1; i <=4;++i){ student.setQuiz(i, in.nextInt()); } student.setMidtrmExm(in.nextInt()); student.setFinalExm(in.nextInt()); in.nextLine(); // Calculate grade and letter grade; double overallQuizScore=0.0,score=0.0; for(int i=1;i<=student.NUM_QUIZZES;i++) { overallQuizScore+=(student.getQuiz(i)/student.QUIZ_MAX_POINTS)*100; } overallQuizScore = (overallQuizScore/4)*0.30; score =...

Complete the searching and sorting algorithms in ModuleOne and ModuleTwo of the modules package. Test all sorting algorithms in AlgorithmsTest. You must build everything from scratch and cannot use any methods in other Java packages to make your algorithm. Restrictions : All classes/methods must be made by you. You are ONLY allowed to use java.util.Arrays.toString method You are NOT allowed to use any other the Java API Library classes/methods.

import java.util.Arrays; import java.util.Random; public class Board { /** * Construct a puzzle board by beginning with a solved board and then * making a number of random moves. That some of the possible moves * don't actually change what the board looks like. * * @param moves the number of moves to make when generating the board. */ public Board(int moves) { throw new RuntimeException("Not implemented"); } The board is 5 X 5. You can add classes and imports like rand.

StringFun.java import java.util.Scanner; // Needed for the Scanner class 2 3 /** Add a class comment and @tags 4 5 */ 6 7 public class StringFun { /** * @param args not used 8 9 10 11 12 public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.print("Please enter your first name: "); 13 14 15 16 17 18 System.out.print("Please enter your last name: "); 19 20 21 //Output the welcome message with name 22 23 24 //Output the length of the name 25 26 27 //Output the username 28 29 30 //Output the initials 31 32 33 //Find and output the first name with switched characters 34 //All Done! } } 35 36 37

Write all the code within the main method in the TestTruck class below. Implement the following functionality. Construct two Truck objects: one with any make and model you choose and the second object with gas tank capacity 10. If an exception occurs, print the stack trace. Print both Truck objects that were constructed. import java.lang.IllegalArgumentException ; public class TestTruck { public static void main( String[] args ) { // write your code here

Write a java class method named countOccurences that returns the number of times a particular integer occurs in an array of integers. The integer and the array will both be parameters.

package Q2;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.util.ArrayList;import java.util.Scanner;public class Question2 {public static void main(String[] args) throws FileNotFoundException {/*** Part a* Finish creating an ArrayList called NameList that stores the names in the file Names.txt.*/ArrayList<String> NameList;/*** Part b* Replace null on the right-hand-side of the declaration of the FileInputStream object named inputStream* so that it is initialized correctly to the Names.txt file located in the folder specified in the question description*/FileInputStream inputStream = null;Scanner scnr = new Scanner(inputStream); //Do not modify this line of code/*** Part c* Using a loop and the Scanner object provided, read the names from Names.txt* and store them in NameList created in Part a.*//*** Part d* Reorder the names in the ArrayList so that they appear in reverse alphabetical order.*/// System.out.println("NameList after correct ordering: "...

In java just add code between the comments public class A6 {/*** In this Java file, you will write three methods that will ensure that the calls in the main methods are* properly executed. You do NOT have to change anything in the main() method. You have to write the methods that* will complete the program.** Pay attention to the method name, the method return type, and the method parameters.*/public static void main(String[] args) {/*Your first method will ask user to enter two values and return the exponent where the firstnumber will be the base and the second will be the exponent. Remember to use a mathematical function.If the user enters value 1 as 2 and value 2 as 3, output of your method should be 8 (2 raised to power 3)*/double calculatedExponent = exponentCalculator();System.out.println(calculatedExponent); //this should print out the exponent value/* Your second method will have two parameters. The first is a String and the second is a number. The methodshould return the...

Can you please help me with this, its in java. Thank you. Write classes in an inheritance hierarchy Implement a polymorphic method Create an ArrayList object Use ArrayList methods For this, please design and write a Java program to keep track of various menu items. Your program will store, display and modify salads, sandwiches and frozen yogurts. Present the user with the following menu options: Actions: 1) Add a salad2) Add a sandwich3) Add a frozen yogurt4) Display an item5) Display all items6) Add a topping to an item9) QuitIf the user does not enter one of these options, then display:Sorry, <NUMBER> is not a valid option.Where <NUMBER> is the user's input. All menu items have the following: Name (String) Price (double) Topping (StringBuilder or StringBuffer of comma separated values) In addition to everything that a menu item has, a main dish (salad or sandwich) also has: Side (String) A salad also has: Dressing (String) A sandwich also has: Bread type...

Answer correctly with explaination No copy paste please

In Java, we can create an array of class objects. True O False