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Q1. Int [] [] array = {{0}, {0, 1}, {0, 2, 4}, {0, 3, 6, 9}, {0, 4, 8, 12, 16}}; 

Systemout.printIn(array [4] [1]); 

System.out.printIn (array) [1] [4]); 

What is the result? 

A. 4 Null 

B. Null 4 

C. An IllegalArgumentException is thrown at run time 

D. 4 An ArrayIndexOutOfBoundException is thrown at run time 

Answer:


Q2. Given: 

What will be the output? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q3. Which two are Java Exception classes? 

A. SercurityException 

B. DuplicatePathException 

C. IllegalArgumentException 

D. TooManyArgumentsException 

Answer: AC 


Q4. What is the result? 

A. Initialized 

Started 

B. Initialized 

Started 

Initialized 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:


Q5. A method doSomething () that has no exception handling code is modified to trail a method that throws a checked exception. Which two modifications, made independently, will allow the program to compile? 

A. Catch the exception in the method doSomething(). 

B. Declare the exception to be thrown in the doSomething() method signature. 

C. Cast the exception to a RunTimeException in the doSomething() method. 

D. Catch the exception in the method that calls doSomething(). 

Answer: AB 


Q6. Given: 

Class A { } 

Class B { } 

Interface X { } 

Interface Y { } 

Which two definitions of class C are valid? 

A. Class C extends A implements X { } 

B. Class C implements Y extends B { } 

C. Class C extends A, B { } 

D. Class C implements X, Y extends B { } 

E. Class C extends B implements X, Y { } 

Answer: AE 


Q7. Given the code fragment: 

System.out.printIn ("Result: " +3+5); 

System.out.printIn ("Result: " + (3+5)); 

What is the result? 

A. Result: 8 

Result: 8 

B. Result: 35 

Result: 8 

C. Result: 8 

Result: 35 

D. Result: 35 

Result: 35 

Answer:


Q8. Given the fragment: 

What is the result? 

A. 13480.0 

B. 13480.02 

C. Compilation fails 

D. An exception is thrown at runtime 

Answer:


Q9. Which two may precede the word ‘class’ in a class declaration? 

A. local 

B. public 

C. static 

D. volatile 

E. synchronized 

Answer: BC 


Q10. What is the result? 

A. 100 210 

B. Compilation fails due to an error in line n1 

C. Compilation fails due to an error at line n2 

D. Compilation fails due to an error at line n3 

Answer: