Design a class “Student “ One int data ID One string data Name One no arg cons One cons with args Method print to display ID + Name 1.draw UML 2.create array of obj to store 5 objects of class student 3.print all objects

Design a class “Student “ One int data ID One string data Name One no arg cons One cons with args Method print to display ID + Name 1.draw UML 2.create array of obj to store 5 objects of class student 3.print all objects

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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Write class named as Main having main method and show activity of above methods. Add 5 Students in array Display all students in array Remove a student by name Show the count of students in array Display all student in array Sort array by name and display all students Sort array by age and display all students Sort array by cgpa and display all students Reverse the array and display all students Note.This is a java program
1. Square Roots Create a class with a method that, given an integer, returns an array of double-precision floating point numbers (known in Java as double), each of which is a square root of a number between 2 and the parameter to the method. For example, if the parameter is 5, the method should return an array of 4 doubles, with approximate values 1.4142135623, 1.7320508075, 2.0, and 2.2360679774. Your method should check the validity of the parameter, and take appropriate action if the parameter is invalid. 2. Reading Files Create a class with a method that, given a string representing a file name, returns an integer with the number of characters in the file. For example, if the file has 10 characters, your method must return the number 10. 3. Main Class Create a class HW1.java with a main method that does both of the following: calls the method from part 1 with a random integer between 0 and 10, and prints each of the numbers in the result. The numbers should all be printed on the…
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Java Control Structures, Arrays Write a main method that asks the user to enter 5 integers to be stored in an array (not an ArrayList). If they enter something that is not an integer, you should present them with a meaningful error message and force them to try again as many times as necessary. Once they have correctly entered five integers, you should thank them and then display the integers they entered. You should write a main method but don't worry about class declarations or imports. Here is an example dialog with the user. Your output does not have to look exactly like this: Enter an integer: 5 Enter an integer: two Not an integer. Try again. Enter an integer: 2@ Not an integer. Try again. Enter an integer: 2 Enter an integer: -100 Enter an integer: 0 Enter an integer: done Not an integer. Try again. Enter an integer: 1000 Thanks. You gave me: 5 2 -100 0 1000
interface IResit { int row = 5; int col = 3; int upperBound = 10; public int[][] initTable(); // initialize 5x3 table with random (upper bound is:10) integer // numbers. “table” is class variable public int[] convertTwoToOne(int[][] a); // convert a two dimensional array into one dimensional // array /* * for example: * a= 1 3 5 * 6 9 -6 * 2 7 4 * * Your method should return: * 4 7 2 -6 9 6 5 3 1 * */ public double averageOfOddElements(int[] a); public double averageOfEvenElements(int[][] a); }// end of the interface /* Write a class that implements the given interface above. 1. Your class should have two constructors: 1. Default constructor: In this case, row, column and upper bound are same as the data that defined in the interface. 2. Overloaded constructor: in this case it should get three parameters, row, column, upper bound respectively. 2. Your constructor parameters are…
when an individual array element of an array of type int is passed to a method, it is passed by reference. True False
You are given a Restaurant class below, which represents restaurant information scraped from online reviews website. public class Restaurant { private String name; //name of the restaurant private String address; //restaurant's address private int rating; //average rating of all reviews (1-5) ... // constructors, getters, setters, toString() are already defined Assume 100 Restaurant objects are stored inside the array. Using the array: Calculate and print the average rating of all restaurants.
Write the statement that declares and instantiates an array of type double using the identifier temperatures that will hold 30 values. Edit View Insert Format Tools Table 12pt v Paragraph v :
Aspects of array that are both positive and negative
Write java code that recursively calculates the Sum of the array cells. Program requirements: Create an array named MyArr and initialize it as follow: 19 27 81 243 88 1- Write a method named ArrSum that recursively calculates the Sum of the numbers in the Array and returns the Sum of the numbers. Hint: Method with 1 parameter (the Array) that returns 1 value (the Array's Sum). 2- Write a method named Display that displays the Array contents and Sum of the numbers. Hint: Method with 2 parameters (the Array) and Sum with no returns (void) 3- Your program output format must be the same as the following: =>> Array Summation Array: 31 19 27 81 243 88 100 6 10 5 Sum: 610 =>> End of the Program Documentation / Comments 31 100 6 10 5
Using jGRASP please de-bug this /**This program demonstrates an array of String objects.It should print out the days and the number of hours spent at work each day.It should print out the day of the week with the most hours workedIt should print out the average number of hours worked each dayThis is what should display when the program runs as it shouldSunday has 12 hours worked.Monday has 9 hours worked.Tuesday has 8 hours worked.Wednesday has 13 hours worked.Thursday has 6 hours worked.Friday has 4 hours worked.Saturday has 0 hours worked.Highest Day is Wednesday with 13 hours workedAverage hours worked in the week is 7.43 hours*/{public class WorkDays{public static void main(String[] args){String[] days = { "Sunday", "Monday", "Tuesday","Wednesday", "Thursday", "Friday", "Saturday"}; int[] hours = { 12, 9, 8, 13, 6, 4}; int average = 0.0;int highest = 0;String highestDay = " ";int sum = 0; for (int index = 0; index < days.length; index++){System.out.println(days[index] + " has "…
Arrays of objects. Java programming: How to create and work with an array of objects in Java I wanted to know that supppose that I have 100 employees who are paid on an hourly basis and I need to keep track of their arrival and departure times, and I have also created the class Clock to implement the time of day in a program. I also know that I will use two arraays; one called arrivalTime and the other array called departure time. Each of these arrays will have 100 elements and each element will be a reference variable of Clock type.. For example Clock[] arrival = new Clock[100]. My qeustion is how do I create the objects arrival and departure. Then how could I use the methods f the class clokc. Thank you