What is the value of x after these codes are executed?

By
Responsive Centered Red Button

Need Help with this Question or something similar to this? We got you! Just fill out the order form (follow the link below), and your paper will be assigned to an expert to help you ASAP.

Order Form

Learning Goal: I’m working on a java practice test / quiz and need an explanation and answer to help me learn.1,Question 1 : True/FalseIf B implements interface A (but B does not extend any class), then B needs to implement all abstract methods in A.
When overriding the method paintComponent(), you can set the method to be either public or protected
Threads are alive before calling the join() method and are dead after the call.
We do not need to handle unchecked exceptions.
ArrayList is more efficient than LinkedList when inserting elements at the end of the list.
Scanner can read numbers as Strings, i.e. use the next() function to read a number.
2,Question 2 : Assume class A has an instance variable x of type int, and a public non-static inner class B. A has a default constructor, and so does B. In the default constructor of A, x is initialized with value 0. Both A and B have methods increment() that increase x by one. Consider the following codes:A objA = new A();A.B objB1 = objA.new B(); A.B objB2 = objA.new B(); objA.increment(); objB1.increment(); objB2.increment();What is the value of x after these codes are executed? Explain your answer. 3,Question 3: Which classnames(s) can we use for the exception in the following try-catch block? i.e. what can T be? Each wrong choice will result in a penalty of a correct one.a,IOError b.Throwable c.Malformed URLException FileNotFoundException IOException FileSystemException Error4Question 4 : Assuming we have an ArrayListExplain why the add() function works in the first case but fails in the second case. Is there any problem with casting?,5,Question 5 : ClassA is an immutable class that has an instance variable aBigInt of type java.math.BigInteger. ClassA has a copy constructor as followspublic final class ClassA{private final BigInteger aBigInt; public ClassA(ClassA obj){aBigInt = obj.aBigInt; }… }Is there anything wrong with this code? Explain your answer why it is right or wrong, and fix it if it is wrong.6.Question 6 : This question is related to the example MessageBox.java.Recall the message box problem: the producer can only produce a message when the previous one has been consumed.1. In a discussion about the putMessage(String) method,public synchronized void putMessage(String message) {//if there is a message, put the current producer into waiting state while (hasMessage) {try { wait(); }catch (InterruptedException e) {…} }…notifyAll();}● Student A suggests that we can replace the while loop in the function by the if statement
● Student B suggests that we can replace notifyAll() by notify().Which student is right, and which student is wrong? Explain your answer2. ) Assuming that each Consumer will consume 5 messages. Explain what happens if the producer only produces 9 messages instead of 10 messages.3. (15pts) Modify the class MessageBox so that the box can contain at most two messages, i.e. the producer is allowed to produce one more message when the previous one is not consumed yet. In detail, the producer can’t produce another message when there are two unconsumed messages. Do not modify the main() function
public class MessageBox {String message;//declaration of other instance variablespublic synchronized void putMessage(String message) {//your implementationSystem.out.printf(“Producer puts message “%s”” @ %dn””

How to create Testimonial Carousel using Bootstrap5

Clients' Reviews about Our Services