Java Programming: Write a lexer that prints out the shank.txt. Below is the shank.txt that needs to be printed out as a series of tokens and attached is the rubric of all the components the lexer needs to have. Shank.txtFibonoacci (Iterative)define add (num1,num2:integer var sum : integer)variable counter : integerFinonacci(N)int N = 10;while counter < Ndefine start ()variables num1,num2,num3 : integeradd num1,num2,var num3{num1 and num2 are added together to get num3}num1 = num2;num2 = num3;counter = counter + 1;GCD (Recursive)define add (int a,int b : gcd)if b = 0sum = asum gcd(b, a % b)GCD (Iterative)define add (inta, intb : gcd)if a = 0sum = bif b = 0sum = awhile counter a != bif a > ba = a - b;elseb = b - a;sum = a;variables a,b : integera = 60b = 96subtract a,b RubricCommentsVariable/FunctionnamingKeyword lexingPunctuation lexingString andcharacter literalsInvalid symbolsthrow an exceptionCommentsIndentationPoorNone/Excessive (0)Single letters everywhere(0)None(0)None(0)None (0)None (0)None (0)None (0)OK"What" not "Why", few(5)Lots of abbreviations(5)A few and/or no hashmap (5)A few punctuationmarks lex(5)Exception thrownand/or some casesmissing (5)GoodSome "what" commentsor missing some (7)Full words most of thetime (8)At least 1/2 of thekeywords in thehashmap and detected(10)Almost all lex but issueswith the multi-characterpunctuation (10)Custom exceptionalways thrown (10)Single line handled (5)Attempted (5)GreatAnything not obvious hasreasoning (10)Full words, descriptive (10)Nearly all keywords in thehashmap and appropriatelydetected (15)Almost all lex (15)Lex correctly (10)Custom exception thrown withgood ToString() (15)Multi-line handled (10)Handles all cases (15)

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Java Programming: Write a lexer that prints out the shank.txt. Below is the shank.txt that needs to be printed out as a series of tokens and attached is the rubric of all the components the lexer needs to have.

Shank.txt

Fibonoacci (Iterative)

define add (num1,num2:integer var sum : integer)
variable counter : integer
Finonacci(N)
int N = 10;
while counter < N
define start ()
variables num1,num2,num3 : integer
add num1,num2,var num3
{num1 and num2 are added together to get num3}
num1 = num2;
num2 = num3;
counter = counter + 1;

GCD (Recursive)

define add (int a,int b : gcd)
if b = 0
sum = a
sum gcd(b, a % b)

GCD (Iterative)

define add (inta, intb : gcd)
if a = 0
sum = b
if b = 0
sum = a
while counter a != b
if a > b
a = a - b;
else
b = b - a;
sum = a;
variables a,b : integer
a = 60
b = 96
subtract a,b

Rubric
Comments
Variable/Function
naming
Keyword lexing
Punctuation lexing
String and
character literals
Invalid symbols
throw an exception
Comments
Indentation
Poor
None/Excessive (0)
Single letters everywhere
(0)
None(0)
None(0)
None (0)
None (0)
None (0)
None (0)
OK
"What" not "Why", few
(5)
Lots of abbreviations
(5)
A few and/or no hash
map (5)
A few punctuation
marks lex(5)
Exception thrown
and/or some cases
missing (5)
Good
Some "what" comments
or missing some (7)
Full words most of the
time (8)
At least 1/2 of the
keywords in the
hashmap and detected
(10)
Almost all lex but issues
with the multi-character
punctuation (10)
Custom exception
always thrown (10)
Single line handled (5)
Attempted (5)
Great
Anything not obvious has
reasoning (10)
Full words, descriptive (10)
Nearly all keywords in the
hashmap and appropriately
detected (15)
Almost all lex (15)
Lex correctly (10)
Custom exception thrown with
good ToString() (15)
Multi-line handled (10)
Handles all cases (15)

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