Q1. Produce a method that reads in a set of values (double) from the user and returns them. Use this header: public static double[] getNumsFromUser (String msgl, String msg2) The implementation of the method should start with a message to input the total number of array elements, followed by a message to enter all the array elements. The method returns the array of elements. The two strings msg1 and msg2 that are passed to the method as parameters will be the two messages that tell the user what to do. In the main class, use the following program outline to test this method: public class Q1 { public static void main(String[] args) { String s1 = "Enter number of students: "; String s2 = "Enter student grades: "; double[] numbers = System.out.println(Arrays.toString(numbers)); getNums FromUser(s1, s2); %3D public static double[] getNumsFromUser(String msg1, String msg2){ //your code goes here } Sample run Enter number of students: 4 Enter student grades: 12.5 23 11.5 27 [12.5, 23.0, 11.5, 27.0]

Q1. Produce a method that reads in a set of values (double) from the user and returns them. Use this header: public static double[] getNumsFromUser (String msgl, String msg2) The implementation of the method should start with a message to input the total number of array elements, followed by a message to enter all the array elements. The method returns the array of elements. The two strings msg1 and msg2 that are passed to the method as parameters will be the two messages that tell the user what to do. In the main class, use the following program outline to test this method: public class Q1 { public static void main(String[] args) { String s1 = "Enter number of students: "; String s2 = "Enter student grades: "; double[] numbers = System.out.println(Arrays.toString(numbers)); getNums FromUser(s1, s2); %3D public static double[] getNumsFromUser(String msg1, String msg2){ //your code goes here } Sample run Enter number of students: 4 Enter student grades: 12.5 23 11.5 27 [12.5, 23.0, 11.5, 27.0]

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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Exercise 1: Write a program that generates a sequence of 20 random values between 0 and 99 in an array, prints the sequence, sorts it, and prints the sorted sequence. Use the sort method from the standard Java library. Exercise 2: Write a program that stores a list of countries: "Egypt", "Switzerland", "Argentina", "Spain", "Portugal", "Luxemburg", etc. Initialize your array with a single statement. Then print out the array. Use the sort function as before to sort the countries in alphabetical order. Reprint your array. Exercise 3: Implement exercises 1 and 2 using ArrayList. Use the Collections.sort method for sorting. After you have printed and sorted your results, then append an additional element to each list and reprint your ArrayLists. Notice that the new items will appear just at the end and will not be sorted. Resort and print out the new ArrayLists again. To clarify, you should print out your ArrayLists after your first sort, after adding items with the…
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