Use Java Exercise 3 - Primality TestingMake a new class in the Lab3 project called Primes. Add a method to this class calledisprime, which takes an integer as input and returns trueif that integer is a prime number,and falseotherwise. In the main method, test the functionality of isPrime, by checkingwhether the following numbers are prime: 1, 7, 142, 83521.

A number is said to be a prime number if it has only 2 factors 1 and itself So, start counting the…

Answered: Make a new class in the Lab3 project…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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All coding is done in Java, using IntelliJ Idea. 3. Charge Account Validation Create a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers: 5658845 4520125 7895122 8777541 8451277 1302850 8080152 4562555 5552012 5050552 7825877 1250255 1005231 6545231 3852085 7576651 7881200 4581002 These numbers snould be stored in an array or an ArrayList Object. Prompt the user to choose search methodology between sequential/linear search, and binary search before the search is performed. Have the search locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not…
Create another class TestCarwhich creates array of n number of cars, uses appropriate set methods to set the values of parametersof every car. Display the details of each car. (If max speed is between 120 and 150 then category is“High speed” otherwise “Normal”) (JAVA)
Add a method called multiplesOfFive to the Exercise class. The method must have a void return type and take a single int parameter called limit. In the body of the method, write a while loop that prints out all multiples of 5 between 10 and limit (inclusive) on a single line. For instance, if the value of limit were 15 then the method will print: 10 15 You can use the printEvenNumbers method that is already in the Exercise class as an example to help you work out how to complete this method. In the main method of the Main class, add a call on the Exercise object to your multiplesOfFive method that prints the multiples of 5 between 10 and 25. Add a method called sum to the Exercise class. The method must have a void return type and take no parameters. In the body of the method, write a while loop to sum the values 1 to 10 and print the sum once the loop has finished. In the main method of the Main class, add a call on the Exercise object to your sum method. Check that it prints: 55 Add…
JAVA PLEASE, ASAP • Create a Library class that has an array of Scrolls. Write proper constructor and other methods required for the class. • Write a method that calculates the total sizes of the Scrolls that can be preserved 100 years in the Library. Note: Do not compress your files, submit only java files. Note: Do not forget to justify your answers with comments.
write a java method with followin instraction : Write a method called prioritizeQueue to give priority for vaccination for elderly persons. The method is to be in a class called VaccinationQueue and has two parameters q1 and q2 type ArrayQueue. The q1 and q2 data are of type Integer. Assume that initially q1 is not empty and q2 is empty. The method will insert from q1 those elements towards the beginning of the queue (front) q2 whose data is greater than or equal to 45 and will insert those elements whose data is less than 45 and greater than or equal to 18 towards the end (rear) of q2. Any data item less than 18 of q1 will not be inserted in q2. It returns the number of elements added to q2. Class ArrayQueue and all its methods including iterator are available for use. You can also create temporary queues. You are not allowed to use arrays or any other data structure. Example: Before method call: front rear q1: 14 25 50…
In ArrayUtility class, create a public static method equals that receives two arrays of int's and returns true if they have the same length and equal corresponding elements. In ArrayUtilityTest class, create a public static method equalsTest that prints the results for the following 6 cases: two empty arrays, one empty and one singleton, two singleton with the same element, two singleton with different elements, two arrays with two identical elements, two arrays with two different elements. Call only this class in the main method and check the results. In ArrayUtility and ArrayUtilityTest, design, implement and test a method named isSorted that checks if an array of int-s is already sorted, i.e. all the elements are in increasing order. In ArrayUtility and ArrayUtilityTest, design, implement and test a method named generateIntArray that generates a random array with the provided length having elements randomly generated between a minimum and maximum value, including those values create…
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Java - Encapsulation Create a class Point with attributes x and y which are both integers. Create getters and setters for these attributes and implement the following methods: 1. calculateDistance() - calculates the distance from the origin to the point. Returns a double, formula is sqrt(x^2 + y^2) 2. printCoordinates() - prints "(x,y)" Ask for user inputs for x and y. Use the methods printCoordinates() and calculateDistance() respectively. Inputs 1. X 2. Y Sample Output Enter x: 20 Enter y: 15 (20,15) 25.00
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Create a java class called ArrayOperations. Add the static methods described below. Then write a test class to verify that all of your methods work. Static Methods for ArrayOperations The lcass name is ArrayOperations It has one static method called findSum. This method returns the sum of the elements in an array To invoke this method from another class, we use the class name (ArrayOperations.findSum(MyArray)); toString : This method signature should be: public static String toString(int[] anArray). It should return a String that consists of all elements in the array. For example if the input array consists of {1, 5, 9, 2}, then toString should return the string 1 5 9 2 findMaxMin : The signature for this method should be public static int[] findMaxMin(int[] anArray) Notice that the method returns an array of int – not a single value. In this method Write code to declare an array of int with two elements – say limits Find the largest element in the array and store it in limits[0]…

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