create a react application to track how many times a button is clicked and display the number. The number must increment each time the button is clicked. Implement the constructor method to set up the initial state. Implement the CountIncrement method to update the value of the count variable by using setState(). In the render method, return two elements and .

Write a for loop to print all elements in courseGrades, following each element with a space (including the last). Print forwards, then backwards. End each loop with a newline. Ex: If courseGrades = {7, 9, 11, 10}, print: 7 9 11 10 10 11 9 7 Hint: Use two for loops. Second loop starts with i = courseGrades.length - 1. import java.util.Scanner; public class CourseGradePrinter {public static void main (String [ ] args) {Scanner scnr = new Scanner(System.in);final int NUM_VALS = 4;int [ ] courseGrades = new int[NUM_VALS];int i; for (i = 0; i < courseGrades.length; ++i) {courseGrades[i] = scnr.nextInt();} /* Your solution goes here */ }}

Update it to create a class Student that includes four properties: an id (type Integer), a name (type String), a Major (type String) and a Grade (type Double). Use class Student to create objects (using buttonAdd) that will be read from the TextFields then save it into an ArrayList. Perform the following queries on the ArrayList of Student objects and show the results on the listViewStudents (Hint: add buttons as needed): d) Use lambdas and streams to calculate the total average of all Students grades, then show the result. e) Use lambdas and streams to group Students by major, then show the results. 1. Ch3HW; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; public class MainApp extends Application{ @Override publicvoidstart(StageprimaryStage) throwsException { FXMLLoader loader...

Please provide an explaation and comments and check image for formula . Write approxPI(), a static method using a simple formula to return an approximate value of π. The method has a single int parameter n, the number of terms used to calculate π, and returns a double value. The simple formula (see notation), is expressed as: Step 1: a simple loop (i=0; i<=n) for the summation (Σ), stored to the variable pSum, of the terms: (-1)i / (2i + 1)pSum = 1/1 + -1/3 + 1/5 + -1/7 + 1/9 + -1/11 + 1/13 ... (up to, and include, number of terms: n) i=0 i=1 i=2 i=3 i=4 i=5 i=6 ... i <= n Step 2: after the summation, multiple by 4 to obtain the final approximation, piApprox = (4 * pSum) Hint: use Math.pow(x,y) (xy) to calculate (-1)iExample calls to the method:displayln ( "n=1: " + approxPI(1) ); // 2.666666666666667displayln ( "n=10: " + approxPI(10) ); // 3.232315809405594displayln ( "n=50: " + approxPI(50) ); // 3.1611986129870506 Test: - test with values of n: 10, 100, 500, 100000

also need help Write a second constructor that takes a String array of pages as input and sets the String array instance variable equal to the input. Continue to default the page number to zero. Part 2: Write a getter and a setter method for the current page number variable. The setter should check to make sure that the input is a valid page number and only update the variable if the new value is valid. Part 3: Write a getCurrentPage method that returns the String of the current page indexed by current_page. public class Ebook{ private String[] pages; private int current_page; //constructor public Ebook() { this.pages = {"See Spot.", "See Spot run.", "Run, Spot, run."}; this.current_page = 0; }}

Add a new method to ArrayTools with filter. Make this method accept a String array. Change all the Strings that are longer than 5 characters to uppercase. Write in Java and use test cases 1 & 2 as a result.

The editTemperatures() method takes in two parameters: integer array tempData and integer numMore. Complete editTemperatures() to create a new array called arrayCopy with the same elements as tempData, and the size increased by numMore. Ex: If the input is: 10 48 49 18 3 then the output is: 10 48 49 18 0 0 0 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Scannerscnr=newScanner(System.in); int[] degreesFahrenheit=newint[4]; intinput; inti; for (i=0; i<degreesFahrenheit.length; ++i) { degreesFahrenheit[i] =scnr.nextInt(); } // Read number of values to increase array size by input=scnr.nextInt(); degreesFahrenheit=editTemperatures(degreesFahrenheit, input); for (i=0; i<degreesFahrenheit.length; ++i) { System.out.print(degreesFahrenheit[i] +" "); } } }

Update it to create a class Student that includes four properties: an id (type Integer), a name (type String), a Major (type String) and a Grade (type Double). Use class Student to create objects (using buttonAdd) that will be read from the TextFields then save it into an ArrayList. Perform the following queries on the ArrayList of Student objects and show the results on the listViewStudents (Hint: add buttons as needed): d) Use lambdas and streams to calculate the total average of all Students grades, then show the result. 1. Ch3HW; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.stage.Stage; public class MainApp extends Application{ @Override publicvoidstart(StageprimaryStage) throwsException { FXMLLoader loader =newFXMLLoader(getClass().getResource("StudentScreen.fxml")); Parent parent = loader.load(); Scene scene =newScene(parent);...

Execute the following statements over initially empty ArrayList myList one after another (cascade). Explain what was changed after each statement (what did it do?) myList.add("z"); ArrayList content: Your explanation (where this output came from): myList.add(0, "a"); ArrayList content: Your explanation (where this output came from): myList.add("t"); ArrayList content: Your explanation (where this output came from): myList.add(2,"w"); ArrayList content: Your explanation (where this output came from): myList.set(0,"b"); ArrayList content: Your explanation (where this output came from):

Exercise #2 Implement an instance method belonging to the IntArrayBag class that takes two input parameters, oldVal and newVal. The method replaces each oldVal element in the array with newVal. Make sure to include the method header.

Java this piece of my code is not working .....I am trying to add Warship with a type or warship , but I keep getting an error ? //add another WarShip instance to the ArrayList. //use a foreach loop to process the ArrayList and print the data for each ship. //count the number of ships that are not afloat. Return this count to main for printing. //In the shipShow method: the number of ships that are still a Float public static int shipShow(ArrayList<Ship> fleetList) { //from the ArrayList, remove the CargoShip that was declared as type Ship. fleetList.remove(2); //Removing ElFaro form the list // review Type casting instanceof | up casting Ship < Warship , subclass is a object of its parents //add warship USS John Warner - add cast by (Ship) new WarShip Ship warship2 = (Ship) new WarShip("USS John Warner", 2015, true, "attack submarine", "United States"); fleetList.add(warship2); int count= 0; //use a foreach loop to process the ArrayList and print the data for each ship....

java please dont take other website'answer. rthis is actually practice question ANIMALCLASS Create an Animal class. Each animal has a name, an x and y integer coordinate. The Animal class should have at minimum the following methodsbelowbut you may want to add more if necessary: Also note, everyanimal will need to have to have "z"passed to it so that it knows how big the map is. •A constructor that starts the animal at 0,0 with a name of "Unknown Animal"and only accepts a single int value (int mapSize). •A parameter constructor that allows the programmerto input all 4pieces of information.(x,y, name, mapSize)oCheck the parameters for valid input based on the constraints. Ifany of the input valuesis invalid, adjust it any way you deem necessary in order to make it valid. •getX()and getY() •getName() •toString(). o This should print out the name and coordinates of the animal. •touching(Animal x) This method should determine if the animal is on the same spot as a secondanimal(x). It...

Hello! I need some help with my Java homework. Please use Eclipse Please add comments to the to program so I can understand what the code is doing and learn Create a new Eclipse project named so as to include your name (eg smith15 or jones15). In this project, create a new package with the same name as the project. In this package, write a solution to the exercise noted below. Implement the following method that returns the maximum element in an array: public static <E extends Comparable<E>> E max(E[] list) Write a test program that generates 10 random integers, invokes this method to find the max, and then displays the random integers sorted smallest to largest and then prints the value returned from the method. Max sure the the last sorted and returned value as the same!