In this lab assignment, you are expected to implement Tester.java, Operator.java,

OperatorIgnoreException.java and OperatorHandleException.java files.

Operator

An interface that has the signatures of the following methods.

$-$ divide method: receives two double and returns a double.

$-$ getElement method: receives an double array and a double value, returns an double.

$-$ convertToInt method: receives a String and returns an integer.

OperatorIgnoreException

A class that implements Operator interface. Does not include any exception handling

property.

$-$ divide: divides two double values. The first argument will be divided by the second

argument.

$-$ getElement: The double argument is the index value. Its floor is the index of the

double to return.

$-$ convertToInt: converts the String to an integer value and returns it$.$

OperatorHandleException

A class that implements Operator interface. The methods work the same way described in

the previous class. Additionally, it has exception handling behaviour.

$-$ divide: ArithmeticException will be thrown in case of divide by zero. Catch that

exception and divide by $0\mathrm{.}1$ instead of $0.$

$-$ getElement: ArrayIndexOutOfBoundsException will be thrown if index exceeds the

boundaries of the array. Catch that exception and return the last element.

$-$ convertToInt: NumberFormatException will be thrown if the string does not consist of

digits. Catch that exception and return an integer that only consist of digits in the string.

For example, for the string $$c$123$ab$11,$ return $12311.$ If the string does not include any

digits, return $0.$