Q81. Given the code fragment: 

What is the result? 

A. A B C 

B. A B C D E 

C. A B D E 

D. Compilation fails. 

Answer:


Q82. Given: 

What is the result? 

A. 3 4 5 6 

B. 3 4 3 6 

C. 5 4 5 6 

D. 3 6 4 6 

Answer:


Q83. Given the following class: 

And given the following main method, located in another class: 

Which three lines, when inserted independently at line n1, cause the program to print a o balance? 

A. this.amount = 0; 

B. amount = 0; 

C. acct (0) ; 

D. acct.amount = 0; 

E. acct. getAmount () = 0; 

F. acct.changeAmount(0); 

G. acct.changeAmount(-acct.amount); 

H. acct.changeAmount(-acct.getAmount()); 

Answer: D,G,H 


Q84. Given: 

What is the result? 

A. Null 

B. Compilation fails 

C. An exception is thrown at runtime 

D. 0 

Answer:


Q85. Given the code fragment: 

Which two modifications, made independently, enable the code to compile? 

A. Make the method at line n1 public. 

B. Make the method at line n2 public. 

C. Make the method at line n3 public. 

D. Make the method at line n3 protected. 

E. Make the method at line n4 public. 

Answer: C,D 


Q86. Given: 

Which is true? 

A. Sum for 0 to 0 = 55 

B. Sum for 0 to 10 = 55 

C. Compilation fails due to error on line 6. 

D. Compilation fails due to error on line 7. 

E. An Exception is thrown at the runtime. 

Answer:

Explanation: 

Loop variables scope limited to that enclosing loop. So in this case, the scope of the loop variable x declared at line 5, limited to that for loop. Trying to access that variable at line 7, which is out of scope of the variable x, causes a compile time error. So compilation fails 

due to error at line 7. Hence option D is correct. 

Options A and B are incorrect, since code fails to compile. 

Reference: httpsy/docs.oracle.com/javase/tutorial/java/nutsandbolts/variables.html 


Q87. Which statement is/are true? 

I. Default constructor only contains "super();" call. 

II. We can't use any access modifier with a constructor. 

III. A constructor should not have a return type. 

A. Only I. 

B. Only II. 

C. Only I and II. 

D. Only I and III. 

E. AIL 

Answer:

Explanation: 

Statement I is correct as the default constructor only contains super0 call 

Statement II is incorrect as we can use any access modifier with a constructor. 

Statement III is correct as constructor can't have return type, even void. 

So option D is correct. 

httpsy/docs.oracle.com/javase/tutorial/iava/javaOO/construaors.html 


Q88. Given: 

public class Test { 

public static void main(String[] args) { 

int day = 1; 

switch (day) { 

case "7": System.out.print("Uranus"); 

case "6": System.out.print("Saturn"); 

case "1": System.out.print("Mercury"); 

case "2": System.out.print("Venus"); 

case "3": System.out.print("Earth"); 

case "4": System.out.print("Mars"); 

case "5": System.out.print("Jupiter"); 

Which two modifications, made independently, enable the code to compile and run? 

A. Adding a break statement after each print statement 

B. Adding a default section within the switch code-block 

C. Changing the string literals in each case label to integer 

D. Changing the type of the variable day to String 

E. Arranging the case labels in ascending order 

Answer: A,C 

Explanation: The following will work fine: 

public class Test { 

public static void main(String[] args) { 

int day = 1; 

switch (day) { 

case 7: System.out.print("Uranus"); break; 

case 6: System.out.print("Saturn"); break; 

case 1: System.out.print("Mercury"); break; 

case 2: System.out.print("Venus"); break; 

case 3: System.out.print("Earth"); break; 

case 4: System.out.print("Mars"); break; 

case 5: System.out.print("Jupiter"); break; 


Q89. Which three are advantages of the Java exception mechanism? 

A. Improves the program structure because the error handling code is separated from the normal program function 

B. Provides a set of standard exceptions that covers all the possible errors 

C. Improves the program structure because the programmer can choose where to handle exceptions 

D. Improves the program structure because exceptions must be handled in the method in which they occurred 

E. Allows the creation of new exceptions that are tailored to the particular program being created 

Answer: A,C,E 


Q90. Given the class definitions: 

And the code fragment of the main() method, 

What is the result? 

A. Java Java Java 

B. Java Jeve va 

C. Java Jeve ve 

D. Compilation fails 

Answer: