answer with proper explanation and step by step solution. Rearrange the following lines of code to rewrite the example for the findAny operation at the beginning of this section so that thefilter method is only called once. Some lines may not be needed.Mouse: Drag/dropKeyboard: Grab/release [Spacebar (or Enter). Move 0000. Cancel EscUnused.parallel().or Else ("");.findAny().filter (w -> w.length() > 10&& w->w.endsWith("y"))II w.endsWith("y"))Iw ->w.endsWith("y"))&& w.endsWith("y"))CheckTerminalOperations.java}}--'0'-----String result = wordsSystem.out.println("A word ending in y: + result);words wordList.stream();Optional result2 = words.max ((v, w) ->v.length() - w.length());Load default template...System.out.print("The longest word: ");result2.ifPresent (w -> System.out.println(w));words wordList.stream();boolean result3=words.allMatch (w ->w.contains ("e"));System.out.print("All words contain an e: ");System.out.println(result3); Rearrange the following lines of code to rewrite the example for the findAny operation at the beginning of this section so that thefilter method is only called once. Some lines may not be needed.Mouse: Drag/dropKeyboard: Grab/release [Spacebar (or Enter). Move +000. Cancel EscUnused.orElse("");&& w.endsWith("y"))&& w ->w.endsWith("y"))I w.endsWith("y"))Iw ->w.endsWith("y")).findAny ().parallel()CheckTerminalOperations.javaimport java.util.ArrayList;import java.util.List;import java.util.Optional;import java.util.Scanner;import java.util.stream.Stream;public class TerminalOperations{Load default template...public static void main(String[] args){Scanner in = new Scanner(System.in);List wordList = new ArrayList<>();while (in.hasNext()) { wordList.add(in.next()); }Stream words = wordList.stream();String result = words.filter (w ->w.length() > 10

Java is a popular programming language used to develop mobile apps, web apps, desktop apps, games,…

Rearrange the following lines of code to rewrite the example for the findAny operation at the beginning of this section so that the filter method is only called once. Some lines may not be needed. Mouse: Drag/drop Keyboard: Grab/release Spacebar (or Enter). Move 1000. Cancel Esc Unused .or Else (""); && w.endsWith("y")) && w->w.endsWith("y")) I w.endsWith("y")) Iw->w.endsWith("y")) .findAny () .parallel() TerminalOperations.java import java.util.ArrayList; import java.util.List; import java.util.Optional; import java.util.Scanner; import java.util.stream.Stream; public class TerminalOperations { Load default template... public static void main(String[] args) { Scanner in = new Scanner(System.in); List wordList = new ArrayList<>(); while (in.hasNext()) { wordList.add(in.next()); } Stream words = wordList.stream(); String result = words .filter(w ->w.length() > 10

Rearrange the following lines of code to rewrite the example for the findAny operation at the beginning of this section so that the filter method is only called once. Some lines may not be needed. Mouse: Drag/drop Keyboard: Grab/release Spacebar (or Enter). Move 1000. Cancel Esc Unused .or Else (""); && w.endsWith("y")) && w->w.endsWith("y")) I w.endsWith("y")) Iw->w.endsWith("y")) .findAny () .parallel() TerminalOperations.java import java.util.ArrayList; import java.util.List; import java.util.Optional; import java.util.Scanner; import java.util.stream.Stream; public class TerminalOperations { Load default template... public static void main(String[] args) { Scanner in = new Scanner(System.in); List wordList = new ArrayList<>(); while (in.hasNext()) { wordList.add(in.next()); } Stream words = wordList.stream(); String result = words .filter(w ->w.length() > 10

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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3. Create an ArrayList of strings to store the names of celebrities or athletes. Add five names to the list. Process the list with a for loop and the get() method to display the names, one name per line. Pass the list to avoid method. Inside the method, Insert another name at index 2 and remove the name at index 4. Use a foreach loop to display the arraylist again, all names on one line separated by asterisks. After the method call in main, create an iterator for the arraylist and use it to display the list one more time. See Sample Output. SAMPLE OUTPUT Here is the list Lionel Messi Drake Adele Dwayne Johnson Beyonce Here is the new list * Lionel Messi * Drake * Taylor Swift * Adele * Beyonce Using an iterator, here is the list Lionel Messi Drake Taylor Swift Adele Beyonce
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 */ }}
In Java please. Add comments as well. Thank you!
Create an ArrayList of strings to store the names of celebrities or athletes. Add five names to the list. Process the list with a for loop and the get() method to display the names, one name per line. Pass the list to a void method. Inside the method, Insert another name at index 2 and remove the name at index 4. Use a foreach loop to display the arraylist again, all names on one line separated by asterisks. After the method call in main, create an iterator for the arraylist and use it to display the list one more time.
In this assignment, you will compare the performance of ArrayList and LinkedList. More specifically, your program should measure the time to “get” and “insert” an element in an ArrayList and a LinkedList.You program should 1. Initializei. create an ArrayList of Integers and populate it with 100,000 random numbersii. create a LinkedList of Integers and populate it with 100,000 random numbers2. Measure and print the total time it takes to i. get 100,000 numbers at random positions from the ArrayList 3. Measure and print the total time it takes to i. get 100,000 numbers at random positions from the LinkedList 4. Measure and print the total time it takes to i. insert 100,000 numbers in the beginning of the ArrayList 5. Measure and print the total time it takes to i. insert 100,000 numbers in the beginning of the LinkedList 6. You must print the time in milliseconds (1 millisecond is 1/1000000 second).A sample run will be like this:Time for get in ArrayList(ms): 1Time for get in…
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):
new JAVA code can only be added between lines 15 and 17. as seen in image.
(Count entire words, not parts of words. For example rate and rated would be different counts. Say rate is there 10 times and rated is there 5 times, that should be the count not rate 15, rated 5. Don't count parts of words.) A Map is an interface that maps keys to values. The keys are unique and thus, no duplicate keys are allowed. A map can provide three views, which allow the contents of the map to be viewed as a set of keys, collection of values, or set of key-value mappings. In addition, the order of the map is defined as the order in which, the elements of a map are returned during iteration. The Map interface is implemented by different Java classes, including HashMap, HashTable, and TreeMap. Each class provides different functionality and can be either synchronized or not. Also, some implementations prohibit null keys and values, and some have restrictions on the types of their keys. A map has the form Map <k,v> where: K: specifies the type of keys maintained in…
We have two classes; these classes are "Car" and "Price".The "car" class is a class that keeps the id and price of the car.If the "Price" class is, there will be get / set methods for the segment of the fee (For example Y segment Z segment), the number of cars, and the "Car" class list.In the "Price" class, there should be a print method to add / remove cars to the list and find the ids of Vehicles whose segments are equal to X.The segments are as follows. 0$ -15999$ -> Y Segment16000$-24999$ -> Z Segment25000$-50000$ -> T Segment It is necessary to use "Single Linked List".The program should be written in JAVA.
Write a Java application CountryList. In the main method, do the following:1. Create an array list of Strings called countries.2. Add "Canada", "India", "Mexico", "Peru" in that order.3. Use the enhanced for loop to print all countries in the array list, one per line.4. Add "Spain" at index 15. Replace the element at index 2 with "Vietnam". You must use the set method.6. Replace the next to the last element with "Brazil". You must use the set method. You willlose one point if you use 3 in the set method. Do this in a manner that would replace thenext to the last element, no matter the size of the array list.7. Remove the object "Canada" Do not remove at an index. Your code should work if"Canada" was at a different location. There is a version of remove method that willremove a specific object.8. Get and print the first element followed by "***"9. Call method toString() on countries to print all elements on one line.10. Use the enhanced for loop to print all countries in the array list,…
In JAVA, use a HashMap to count and store the frequency counts for all the words from a large text document. Using file util, please. Then, display the contents of this HashMap with words and frequency count. Next, please create a set view of the Map and store the contents in an array. Sort this array based on key value and display it. Finally, sort the array in decreasing order by frequency and display it as well. Please label your explanation in the code Thank you
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…