Lexical Analyzer For Java

A lexical Analyzer for Java created using Python. The program takes a java file as input and scans the whole file. It categorizes each token of the program as one of the following:

• DELIMITER
• IDENTIFIER
• KEYWORD
• OPERATOR
• CONSTANTS

Execution Steps:

Method 1 :

1. Copy jLex.py to your project folder
2. Do this in your file

from jLex import LexicalAnayzer

x = LexicalAnalyzer("./input.java") #Takes file path as Input
x.generateLexicalTable() 

## Ouputs following data to 'lexTable.txt'
# +--------+----------+------------+---------------+
# |  Line  |  Lexeme  |   Token    |  Token Value  |
# +--------+----------+------------+---------------+
# |   1    | public   | KEYWORD    |    (KW,24)    |
# |   1    | class    | KEYWORD    |    (KW,41)    |
# |   1    | input    | IDENTIFIER |    (ID,01)    |
# |   1    | {        | DELIMITER  |    (DL,03)    |
# |   2    | public   | KEYWORD    |    (KW,24)    |
# |   2    | static   | KEYWORD    |    (KW,39)    |
# 	.		.			.
# 	.		.			.
# 	.		.			.
#

Method 2 :

1. Run python jLex.py -i input.java
2. Run python jLex.py --help for help

Developer:

• Yash Oswal: @yashoswalyo