Question

Do the following using JAVA language.

a) Create an Error. (You can create any error.)
b) Handle the error.
c) Create a custom exception which will give a kind message.
d) Handle both of the errors by using only one try-catch block.

Answer 1

a)

public class MyClass {
public static void main(String args[]) {
int x=10;
int y=x/0;

System.out.println("Sum of y = " + y);
}
}

b)

public class MyClass {
public static void main(String args[]) {
int x=10;
try
{
int y=x/0;
System.out.println("Sum of y = " + y);
}
catch(ArithmeticException e)
{
e.printStackTrace();
System.out.println("Error handled");
  
}
}
}

Output:

c)

class CustomException extends Exception
{
public CustomException(String s)
{
super(s);
}
}
public class MyClass {
public static void main(String args[]) {
int x=10;
try
{
int y=x/2;
System.out.println("Sum of y = " + y);
throw new CustomException("Custom Exception");
}
catch(CustomException e)
{
e.printStackTrace();
System.out.println("Error handled");
  
}
}
}

Output:

d)

class CustomException extends Exception
{
public CustomException(String s)
{
super(s);
}
}
public class MyClass {
public static void main(String args[]) {
int x=10;
try
{
int y=x/0;
System.out.println("Sum of y = " + y);
throw new CustomException("Custom Exception");
  
}
catch(ArithmeticException | CustomException ex)
{
ex.printStackTrace();
System.out.println("Exception handled");
}
}
}

Output: