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Q41. Given the code fragment: 

What is the result? 

A. 10 : 10 

B. 5 : 5 

C. 5 : 10 

D. Compilation fails 

Answer:


Q42. Given: 

What is the result? 

A. True false 

B. True null 

C. Compilation fails 

D. A NullPointerException is thrown at runtime 

Answer:


Q43. Given the following class declarations: 

public abstract class Animal 

public interface Hunter 

public class Cat extends Animal implements Hunter 

public class Tiger extends Cat 

Which answer fails to compile? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

E. Option E 

Answer:

Explanation: Look at the right side of the declaration ArrayLIst() rather than ArrayList 


Q44. Given the code fragment: 

What is the result? 

A. 2 4 

B. 0 2 4 6 

C. 0 2 4 

D. Compilation fails 

Answer:


Q45. Given: 

Which code fragment should you use at line n1 to instantiate the dvd object successfully? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer:


Q46. Given the code fragment: 

What is the result? 

A. Execution terminates in the first catch statement, and caught a RuntimeException is printed to the console. 

B. Execution terminates In the second catch statement, and caught an Exception is printed to the console. 

C. A runtime error is thrown in the thread "main". 

D. Execution completes normally, and Ready to us. is printed to the console. 

E. The code fails to compile because a throws keyword is required. 

Answer:


Q47. Given: 

Which option enables the code to compile? 

A. Option A 

B. Option B 

C. Option C 

D. Option D 

Answer: C,D 


Q48. Given the code fragment: 

What could expression1 and expression2 be, respectively, in order to produce output –8, 16? 

A. + +a, - -b 

B. + +a, b- -

C. A+ +, - - b 

D. A + +, b - -

Answer:


Q49. Given the following four Java file definitions: 

// Foo.java 

package facades; 

public interface Foo { } 

// Boo.java 

package facades; 

public interface Boo extends Foo { } 

// Woofy.java 

package org.domain 

// line n1 

public class Woofy implements Boo, Foo { } 

// Test.java 

package.org; 

public class Test { 

public static void main(String[] args) { 

Foo obj=new Woofy(); 

Which set modifications enable the code to compile and run? 

A. At line n1, Insert: import facades;At line n2, insert:import facades;import org.domain; 

B. At line n1, Insert: import facades.*;At line n2, insert:import facades;import org.*; 

C. At line n1, Insert: import facades.*;At line n2, insert:import facades.Boo;import org.*; 

D. At line n1, Insert: import facades.Foo, Boo;At line n2, insert:import org.domain.Woofy; 

E. At line n1, Insert: import facades.*;At line n2, insert:import facades;import org.domain.Woofy; 

Answer:


Q50. Given: 

And given the code fragment: 

What is the result? 

A. 4W 100 Auto 4W 150 Manual 

B. Null 0 Auto 4W 150 Manual 

C. Compilation fails only at line n1 

D. Compilation fails only at line n2 

E. Compilation fails at both line n1 and line n2 

Answer:

Explanation: 

On line n1 implicit call to parameterized constructor is missing and n2 this() must be the first line.