5-Write an EBNF rule that describes the following while statement of Java. Then, write the recursive-descent subprogram in Java for the EBNF rule. Please sum-
mit your source code and a screen shot of the parsing of the following examples.
do{
if (number < 10 )
number=number+1;
else
number=number+2;
} while (number < 20)

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).