What does @Test(invocationCount=?) and (threadPoolSize=?) indicates?
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What does @Test(invocationCount=?) and (threadPoolSize=?) indicates?
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- Write a program in java that forms a green square inside a JPanel. Once you press space, the square should move from one side to the other horizontally (for example from left topto the right top).When the square hits the edge of the Panel, it should move the negative direction to reach to the other side. The square must be updated using a Runnable and therefore,make sure that it is utilizing concurrency properly. You know that you need to override the method run, coming from a Runnable to implement basic concurrency.Another trick, when the user presses S key, a new square is created and they move simultaneously (as they are concurrent objects). Make sure they don't stand on top of eachother; change their Y coordinates a bit to make the other squares a bit lower in the screen. We should be able to create 5 squares in your environment. Beyond 5, you shouldprevent creation of additional squares.I have an error in the code: Failed : ConferenceClassIComparableTest.ConferenceTest `Conference` class should implement `IComparable` interface Expected: True But was: False at ConferenceClassIComparableTest.ConferenceTest () [0x00000] in <a9f68112596545e395054a4bf32f46b4>:0Do example programs in collection framework and execute the same n upload... Try to use all methods and interfaces Note: please do all these programs using java
- DO NOT COPY FROM OTHER WEBSITES Code with comments and output screenshot is must for an Upvote. Thank you!!!How did you decide to handle the possibility of queue underflow in java? A. Assume as a precondition that it will not occur. B. Provide an isEmpty operation so a client can prevent underflow. C. Ignore it. D. Throw a QueueUnderflowException if it occurs. E. Throw a QueueUnderflowException if it occurs, and provide an isEmpty operation so a client can prevent underflowFor the following code I get an error: Exception in thread "main" java.lang.Error: Unresolved compilation problems: The type LinkedListIn is not generic; it cannot be parameterized with arguments <String> The type LinkedListIn is not generic; it cannot be parameterized with arguments <> at linkedList.LinkedListTester.main(LinkedListTester.java:5) How can I fix it? package linkedList; public class LinkedListTester { public static void main(String[] args) { LinkedListIn<String> list = new LinkedListIn<>(); list.display(); list.add("Station 1"); list.add("Station 2"); list.add("Station 3"); list.add("Station 4"); // Print the linked list System.out.println("All Stations: " + list); // Accessing the first item System.out.println("First stop: " + list.getFirst()); // Accessing the last item System.out.println("Last stop: " + list.getLast()); // Removing the first item System.out.println("Left this station: " + list.removeFirst()); //…
- What is generic class give me a one exampleYou have to use comment function to describe what each line does import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.List; public class PreferenceData { private final List<Student> students; private final List<Project> projects; private int[][] preferences; private static enum ReadState { STUDENT_MODE, PROJECT_MODE, PREFERENCE_MODE, UNKNOWN; }; public PreferenceData() { super(); this.students = new ArrayList<Student>(); this.projects = new ArrayList<Project>(); } public void addStudent(Student s) { this.students.add(s); } public void addStudent(String s) { this.addStudent(Student.createStudent(s)); } public void addProject(Project p) { this.projects.add(p); } public void addProject(String p) { this.addProject(Project.createProject(p)); } public void createPreferenceMatrix() { this.preferences = new…CustomIntegerArrayListTest.java package integerarraylist; import static org.junit.jupiter.api.Assertions.*; import java.util.ArrayList; import org.junit.jupiter.api.Test; class CustomIntegerArrayListTest { @Test void testGetArrayList() { //create a new empty CustomIntegerArrayList CustomIntegerArrayList arr1 = new CustomIntegerArrayList(); arr1.add(2); arr1.add(0, 5); arr1.add(1, 5); ArrayList<Integer> lst1 = new ArrayList<Integer>(); lst1.add(2); lst1.add(0, 5); lst1.add(1, 5); assertEquals(lst1, arr1.getArrayList()); ArrayList<Integer> arr4Elements = new ArrayList<Integer>(); arr4Elements.add(100); arr4Elements.add(200); arr4Elements.add(500); //create a new CustomIntegerArrayList with the elements in the given ArrayList CustomIntegerArrayList arr4 = new CustomIntegerArrayList(arr4Elements); ArrayList<Integer> lst4 = new ArrayList<Integer>(); lst4.add(100); lst4.add(200); lst4.add(500); assertEquals(lst4, arr4.getArrayList()); //…
- FOR JAVA, JUST FILL THIS CODE ABOUT THE QUESTIONS BELOW IT IN 50 MINUTES PLEASE. !!! import java.util.ArrayList; public class University { } // SERVER-SIDE class ServerTeacher { // port: the port number to be allocated // students: list of the students having id and grade information private int port; private ArrayList<Student> students; public ServerTeacher(int port, ArrayList<Student> students) { this.port = port; this.students = students; } // find the grade of the student whose id given, if student couldn't find then return -1 public int findGrade(int id) { // *** FILL THIS METHOD FOR PART 1 *** // } // open the server listen for the student ask their grades public int respondStudent() { // *** FILL THIS METHOD FOR PART 2 *** // } } // CLIENT-SIDE class ClientStudent { private int port; // the port number to be allocated public ClientStudent(int port) { this.port = port; } // open client and ask the student's grade to server public…Suppose we had support for multimethods instead of or in addition to overloading. Explain how you would implement the pretty printer of Project 1 using multimethods instead of having a print() method in each class of the hierarchy. What would be the advantage of using multimethods? You can simply use the same syntax as for overloading and indicate where the multimethod dispatch happens.for some reason I keep getting an error Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method append(char) is undefined for the type StringBuilder at StringBuilder.main(StringBuilder.java:19)