Question 11. Given the following piece of code:
class SalaryCalculationException extends Exception{}
class Person{
public void calculateSalary() throws SalaryCalculationException{
//...
throw new SalaryCalculationException();
//...
}
}
class Company{
public void paySalaries(){
new Person().calculateSalary();
}
}
Which of the following statements is correct?
1. This code will compile without any problems.
2. This code will compile if in method paySalaries() we return a boolean in stead of void.
3. This code will compile if we add a try-catch block in paySalaries().
4. This code will compile if we add throws SalaryCalculationException in the signature of method paySalaries().

Question 12. What will be the output of the following piece of code:
class Person{
public void talk() {}
}
public class Test{
public static void main(String args[]){
Person p = null;
try{
p.talk();
}
catch(NullPointerException e){
System.out.print("There is a NullPointerException. ");
}
catch(Exception e){
System.out.print("There is an Exception. ");
}
System.out.print("Everything went fine. ");
}
}

Question 13. Determine output of the following program code?
public class Test{
public static void main(String args[]){
int i;
try{
i = calculate();
System.out.println(i);
}catch(Exception e){
System.out.println("Error occured");
}
}
static int calculate(){
return (7/2);
}
}

Question 14. Public class Test{
public static void main(String args[]){
try{
int a = Integer.parseInt("four");
}
}
}
Which exception could be handled by the catch block for above?

Question 15. What will be the output?
class MyClass{
public String test(){
try{
System.out.print("One");
return "";
}
finally{
System.out.print("Two");
}
}
}
public class Test{
public static void main(String args[]){
MyClass m = new MyClass();
m.test();
}
}

Question 16. What will be the result after compiling this code?
class SuperClass{
public int doIt(String str, Integer... data)throws Exception{
String signature = "(String, Integer[])";
System.out.println(str + " " + signature);
return 1;
}
}
public class Test extends SuperClass{
public int doIt(String str, Integer... data){
String signature = "(String, Integer[])";
System.out.println("Overridden: " + str + " " +signature);
return 0;
}
public static void main(String... args){
SuperClass sb = new Test();
sb.doIt("hello", 3);
}
}

Question 17. Try{
File f = new File("a.txt");
}catch(Exception e){
}catch(IOException io){
}
Is this code create new file name a.txt ?

Question 18. What is the output for the below code ?
import java.io.FileNotFoundException;
class A{
public void printName() throws FileNotFoundException{
System.out.println("Value-A");
}
}
class B extends A{
public void printName() throws NullPointerException{
System.out.println("Name-B");
}
}
public class Test{
public static void main (String[] args) throws Exception{
A a = new B();
a.printName();
}
}

Question 19. What will be the result of executing the following code?
public class Test{
public void divide(int a, int b){
try{
int c = a / b;
}catch(Exception e){
System.out.print("Exception ");
}finally{
System.out.println("Finally");
}
public static void main(String args[]){
Test t = new Test();
t.divide(0,3);
}
}

Question 20. Which of the below statement is/are true about Error?
A. An Error is a subclass of Throwable.
B. An Error is a subclass of Exception.
C. Error indicates serious problems that a reasonable application should not try to catch.
D. An Error is a subclass of IOException.