Write a program that reads a Java source-code file and reports the number of keywords (including null, true, and false) in the file. If a keyword is in a comment or in a string, dont count it. Test your program to count the keywords in the Welcome.java file:

Please input the Java filename: Welcome.java The number of keywords in the program is 6 

Hint: Create a set to store all the Java keywords:

Here is the code:

import java.util.*;

public class HW3_Q1 {

public static void main(String[] args) {

// Array of all Java keywords + true + null

String[] keywordString = { "abstract", "finally", "public", "boolean", "float",

"return", "break", "for", "short", "byte",

"goto", "static", "case", "if", "super", "catch",

"implements", "switch", "char", "import", "synchronized",

"class", "instanceof", "this", "const", "int",

"throw", "continue", "interface", "throws", "default",

"long", "transient", "do", "native", "try",

"double", "new", "void", "else", "package",

"volatile", "extends", "private", "while", "final",

"protected", "true", "null"

};

Scanner scanner = new Scanner(System.in);

System.out.print("Please input the Java filename: ");

String filename = scanner.nextLine();

scanner.close();

// Your code here

// ...

}

// Or here

// ...

}