Threads — Part 2 MCQs with Explanations

Yes, but it will execute in the current thread, not as a separate thread is the correct answer to “In Java, can you directly access the run() method of a Thread object”. This question is standard in competitive examination syllabi for Threads.

It retrieves the current state of a thread is the correct answer to “What is the purpose of the getState() method in Java threads”. This question is standard in competitive examination syllabi for Threads.

10 is the correct answer to “In Java, what is the maximum thread priority value”. This question is standard in competitive examination syllabi for Threads.

Both of the above is the correct answer to “In java a thread can be created by ..........”. This question is standard in competitive examination syllabi for Threads.

run() is the correct answer to “When a class extends the Thread class ,it should override ............ method of Thread class to start that thread.”. This question is standard in competitive examination syllabi for Threads.

The program does not compile because this cannot be referenced in a static method. is the correct answer to “What will be the output of the following program code? public class Test implements Runnable{ public static void main(String[] args){ Thread t = new Thread(this); t.start(); } public void run(){ System.out.println("test"); } }”. This question is standard in competitive examination syllabi for Threads.

The program compiles fine. is the correct answer to “Analyze the following code: public abstract class Test implements Runnable{ public void doSomething() { }; }”. This question is standard in competitive examination syllabi for Threads.

The program compiles and runs and displays test. is the correct answer to “Analyze the following code: public class Test implements Runnable{ public static void main(String[] args){ Test t = new Test(); } public Test(){ Thread t = new Thread(this); t.start(); } public void run(){ System.out.println("test"); } }”. This question is standard in competitive examination syllabi for Threads.

0 1 is the correct answer to “What will be the output? class One extends Thread{ public void run(){ for(int i=0; i<2; i++){ System.out.print(i); } } } public class Test{ public static void main(String args[]){ Test t = new Test(); t.call(new One()); } public void call(One o){ o.start(); } }”. This question is standard in competitive examination syllabi for Threads.

1 , 2 and 4 is the correct answer to “Which of the following are methods of the Thread class? 1) yield() 2) sleep(long msec) 3) go() 4) stop()”. This question is standard in competitive examination syllabi for Threads.

Clean compile but no output at runtime is the correct answer to “What is the output for the below code? public class Test extends Thread{ public static void main(String argv[]){ Test t = new Test(); t.run(); } public void start(){ for(int i = 0; i < 10; i++){ System.out.println("Value of i = " + i); } } }”. This question is standard in competitive examination syllabi for Threads.

synchronized is the correct answer to “Which keyword when applied on a method indicates that only one thread should execute the method at a time.”. This question is standard in competitive examination syllabi for Threads.

"BeginRunEnd" is printed. is the correct answer to “What will be the output after compiling and executing the following code? public class Test implements Runnable{ public static void main(String[] args) throws InterruptedException{ Thread a = new Thread(new Test()); a.start(); System.out.print("Begin"); a.join(); System.out.print("End"); } public void run(){ System.out.print("Run"); } }”. This question is standard in competitive examination syllabi for Threads.

"gogogo" is printed is the correct answer to “What will be output of the following program code? public class Test implements Runnable{ public void run(){ System.out.print("go"); } public static void main(String arg[]) { Thread t = new Thread(new Test()); t.run(); t.run(); t.start(); } }”. This question is standard in competitive examination syllabi for Threads.

"BeginRunEnd" is printed. is the correct answer to “Given the code. What will be the result? public class Test implements Runnable{ public static void main(String[] args) throws InterruptedException{ Thread a = new Thread(new Test()); a.start(); System.out.print("Begin"); a.join(); System.out.print("End"); } public void run(){ System.out.print("Run"); } }”. This question is standard in competitive examination syllabi for Threads.

all of the mentioned is the correct answer to “Which of this method is used to avoid polling in Java”. This question is standard in competitive examination syllabi for Threads.

Thread[My Thread,5,main] is the correct answer to “What will be the output of the following Java code? class newthread implements Runnable { Thread t; newthread() { t = new Thread(this,"My Thread"); t.start(); } public void run() { System.out.println(t); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

true is the correct answer to “What will be the output of the following Java code? class newthread extends Thread { Thread t; newthread() { t = new Thread(this,"New Thread"); t.start(); } public void run() { System.out.println(t.isAlive()); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

falsefalse is the correct answer to “What will be the output of the following Java code? class newthread extends Thread { Thread t1,t2; newthread() { t1 = new Thread(this,"Thread_1"); t2 = new Thread(this,"Thread_2"); t1.start(); t2.start(); } public void run() { t2.setPriority(Thread.MAX_PRIORITY); System.out.print(t1.equals(t2)); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

start() method creates new thread and calls code written in run() method is the correct answer to “What is true about threading”. This question is standard in competitive examination syllabi for Threads.

Main thread interrupted is the correct answer to “What will be the output of the following Java program? class newthread extends Thread { Thread t; String name; newthread(String threadname) { name = threadname; t = new Thread(this,name); t.start(); } public void run() { } } class multithreaded_programing { public static void main(String args[]) { newthread obj1 = new newthread("one"); newthread obj2 = new newthread("two"); try { obj1.t.wait(); System.out.print(obj1.t.isAlive()); } catch(Exception e) { System.out.print("Main thread interrupted"); } } }”. This question is standard in competitive examination syllabi for Threads.

Compilation Error is the correct answer to “What will be the output of the following Java code? class newthread implements Runnable { Thread t; newthread() { t = new Thread(this,"My Thread"); t.start(); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

My Thread is the correct answer to “What will be the output of the following Java code? class newthread implements Runnable { Thread t; newthread() { t = new Thread(this,"My Thread"); t.start(); } public void run() { System.out.println(t.getName()); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

falsefalse is the correct answer to “What will be the output of the following Java code? class newthread implements Runnable { Thread t; newthread() { t1 = new Thread(this,"Thread_1"); t2 = new Thread(this,"Thread_2"); t1.start(); t2.start(); } public void run() { t2.setPriority(Thread.MAX_PRIORITY); System.out.print(t1.equals(t2)); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

notify() is the correct answer to “Which of these method wakes up the first thread that called wait()”. This question is standard in competitive examination syllabi for Threads.

synchronized is the correct answer to “Which of these keywords are used to implement synchronization? class newthread extends Thread { Thread t; String name; newthread(String threadname) { name = threadname; t = new Thread(this,name); t.start(); } public void run() { } } class multithreaded_programing { public static void main(String args[]) { newthread obj1 = new newthread("one"); newthread obj2 = new newthread("two"); try { obj1.t.wait(); System.out.print(obj1.t.isAlive()); } catch(Exception e) { System.out.print("Main thread interrupted"); } } }”. This question is standard in competitive examination syllabi for Threads.

wait() is the correct answer to “Which of these method is used to tell the calling thread to give up a monitor and go to sleep until some other thread enters the same monitor”. This question is standard in competitive examination syllabi for Threads.

Time slicing is the process to divide the available CPU time to available runnable thread is the correct answer to “What is true about time slicing”. This question is standard in competitive examination syllabi for Threads.

Integer is the correct answer to “Thread priority in Java is”. This question is standard in competitive examination syllabi for Threads.

Thread scheduler is the correct answer to “What decides thread priority”. This question is standard in competitive examination syllabi for Threads.

notifyAll() is the correct answer to “Which of these method wakes up all the threads”. This question is standard in competitive examination syllabi for Threads.

Thread(Runnable a, String str) is the correct answer to “Which of the following is a correct constructor for thread”. This question is standard in competitive examination syllabi for Threads.

Thread[New Thread,10,main] is the correct answer to “What will be the output of the following Java code? class newthread implements Runnable { Thread t; newthread() { t = new Thread(this,"New Thread"); t.start(); } public void run() { t.setPriority(Thread.MAX_PRIORITY); System.out.println(t); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

isAlive() is the correct answer to “Which of this method is used to find out that a thread is still running or not”. This question is standard in competitive examination syllabi for Threads.

start() is the correct answer to “Which of these method is used to begin the execution of a thread”. This question is standard in competitive examination syllabi for Threads.

Thread is the correct answer to “What requires less resources”. This question is standard in competitive examination syllabi for Threads.

Thread[My Thread,5,main] is the correct answer to “What will be the output of the following Java code? class newthread extends Thread { newthread() { super("My Thread"); start(); } public void run() { System.out.println(this); } } class multithreaded_programing { public static void main(String args[]) { new newthread(); } }”. This question is standard in competitive examination syllabi for Threads.

True is the correct answer to “Deadlock is a situation when thread is waiting for other thread to release acquired object.”. This question is standard in competitive examination syllabi for Threads.

It is dependent on the operating system is the correct answer to “What will happen if two thread of the same priority are called to be processed simultaneously”. This question is standard in competitive examination syllabi for Threads.

true is the correct answer to “What is the name of the thread in output in the following Java program? class multithreaded_programing { public static void main(String args[]) { Thread t = Thread.currentThread(); System.out.println(t.isAlive()); } }”. This question is standard in competitive examination syllabi for Threads.