Welcome to the Multithreading MCQs Page
Dive deep into the fascinating world of Multithreading with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Multithreading, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Multithreading, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.
Check out the MCQs below to embark on an enriching journey through Multithreading. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.
Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Multithreading. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!
Multithreading MCQs | Page 8 of 10
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class Test
{
public static void main(String [] args)
{
printAll(args);
}
public static void printAll(String[] lines)
{
for(int i = 0; i < lines.length; i++)
{
System.out.println(lines[i]);
Thread.currentThread().sleep(1000);
}
}
}
class MyThread extends Thread
{
public static void main(String [] args)
{
MyThread t = new MyThread(); /* Line 5 */
t.run(); /* Line 6 */
}
public void run()
{
for(int i=1; i < 3; ++i)
{
System.out.print(i + "..");
}
}
}
class Test116
{
static final StringBuffer sb1 = new StringBuffer();
static final StringBuffer sb2 = new StringBuffer();
public static void main(String args[])
{
new Thread()
{
public void run()
{
synchronized(sb1)
{
sb1.append("A");
sb2.append("B");
}
}
}.start();
new Thread()
{
public void run()
{
synchronized(sb1)
{
sb1.append("C");
sb2.append("D");
}
}
}.start(); /* Line 28 */
System.out.println (sb1 + " " + sb2);
}
}
public class ThreadTest extends Thread
{
public void run()
{
System.out.println("In run");
yield();
System.out.println("Leaving run");
}
public static void main(String []argv)
{
(new ThreadTest()).start();
}
}
class s1 extends Thread
{
public void run()
{
for(int i = 0; i < 3; i++)
{
System.out.println("A");
System.out.println("B");
}
}
}
class Test120 extends Thread
{
public void run()
{
for(int i = 0; i < 3; i++)
{
System.out.println("C");
System.out.println("D");
}
}
public static void main(String args[])
{
s1 t1 = new s1();
Test120 t2 = new Test120();
t1.start();
t2.start();
}
}
class s implements Runnable
{
int x, y;
public void run()
{
for(int i = 0; i < 1000; i++)
synchronized(this)
{
x = 12;
y = 12;
}
System.out.print(x + " " + y + " ");
}
public static void main(String args[])
{
s run = new s();
Thread t1 = new Thread(run);
Thread t2 = new Thread(run);
t1.start();
t2.start();
}
}
public class ThreadDemo
{
private int count = 1;
public synchronized void doSomething()
{
for (int i = 0; i < 10; i++)
System.out.println(count++);
}
public static void main(String[] args)
{
ThreadDemo demo = new ThreadDemo();
Thread a1 = new A(demo);
Thread a2 = new A(demo);
a1.start();
a2.start();
}
}
class A extends Thread
{
ThreadDemo demo;
public A(ThreadDemo td)
{
demo = td;
}
public void run()
{
demo.doSomething();
}
}
public class WaitTest
{
public static void main(String [] args)
{
System.out.print("1 ");
synchronized(args)
{
System.out.print("2 ");
try
{
args.wait(); /* Line 11 */
}
catch(InterruptedException e){ }
}
System.out.print("3 ");
}
}Note: Assuming that data must be protected from corruption, what—if anything—can you add to the preceding code to ensure the integrity of data?
public class SyncTest
{
public static void main (String [] args)
{
Thread t = new Thread()
{
Foo f = new Foo();
public void run()
{
f.increase(20);
}
};
t.start();
}
}
class Foo
{
private int data = 23;
public void increase(int amt)
{
int x = data;
data = x + amt;
}
}1. Extend java.lang.Thread and override the run() method.
2. Extend java.lang.Runnable and override the start() method.
3. Implement java.lang.Thread and implement the run() method.
4. Implement java.lang.Runnable and implement the run() method.
5. Implement java.lang.Thread and implement the start() method.
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