Tag: programming languages

Quizzes (351) Questions (7021)

Questions Related to programming languages

Multiple choice technology programming languages

Invoking wait(), notify and notifyAll() methods without acquiring lock over an object will lead to:

IllegalMonitorStateException
IllegalThreadStateException
IllegalLockStateException
InvalidLockException

Reveal answer Fill a bubble to check yourself

Multiple choice technology programming languages

Restarting a thread leads to:

ThreadRestartExcetion
IllegalThreadStateException
IllegalMonitorStateException
none

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Multiple choice technology programming languages

Which of the following is not a static method of Thread class

sleep()
join()
activeCount()
none

Reveal answer Fill a bubble to check yourself

Multiple choice technology programming languages

Which of the following are not the methods of Thread class

wait()
notify()
notifyAll()
start()

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Multiple choice technology programming languages

Which of the following are public, static and final constants of Thread class

Thread.MAX_PRIORITY
Thread.NORM_PRIORITY
Thread.LOW_PRIORITY
Thread.MIN_PRIORITY

Reveal answer Fill a bubble to check yourself

Multiple choice technology programming languages

Is it compulsory for the subclass to declare the inherited synchronized method as synchronized while overriding it.

True
False

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Multiple choice technology programming languages

public class Test { public static void main(String... args) { for(int i = 2; i < 4; i++) for(int j = 2; j < 4; j++) if(i < j) assert i!=j : i; } }

The class compiles and runs, but does not print anything
The number 2 gets printed with AssertionError
The number 3 gets printed with AssertionError
compile error

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Multiple choice technology programming languages

What is the output for the below code ? public interface TestInf { int i =10; } public class Test { public static void main(String... args) { TestInf.i=12; System.out.println(TestInf.i); } }

Compile with error
10
12
Runtime Exception

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Multiple choice technology programming languages

What is the output for the below code ? public class Test { static { int a = 5; } public static void main(String[] args){ System.out.println(a); } }

Compile with error
5
0
Runtime Exception

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Multiple choice technology programming languages

What is the output for the below code ? class A { { System.out.print("b1 "); } public A() { System.out.print("b2 "); } } class B extends A { static { System.out.print("r1 "); } public B() { System.out.print("r2 "); } { System.out.print("r3 "); } static { System.out.print("r4 "); } } class C extends B { public static void main(String[] args) { System.out.print("pre "); new C(); System.out.println("post "); } }

r1 r4 pre b1 b2 r3 r2 post
r1 r4 pre b1 b2 post
r1 r4 pre b1 b2 post r3 r2
pre r1 r4 b1 b2 r2 r3 post

Reveal answer Fill a bubble to check yourself

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