A lexical analyzer made in Java

lexical analyzer java

/*
 * This programs works as a lexical analyzer
 */
package LexicalAnalyzer2;
import java.util.Scanner;

/**
 * @author adeel
 */
public class Built {
    public static void main(String[] args){
        
        System.out.print("State your input: ");
        Scanner in = new Scanner(System.in);
        String user_input = in.nextLine(); 
        
        char array[] = user_input.toCharArray(); /*convert string into character array*/
        int size_of_array = array.length; /*Check size of array*/

        int count = 0; /*Counter Variable*/
        boolean flag = true; /*To identify between spaces and words*/
 
        /*Count number of words including spaces*/
        for(int i=0;i<size_of_array;i++){
            if(array[i] == ' '){
                /*count spaces*/
                count++;
                flag = true;
            }
            if(array[i]!=' ' && flag==true){
                /*count words*/
                count++;
                flag = false;
            }
        }/*End of for loop*/
        System.out.println("Number Of Words: " +count);
        
        /*Finding total number of keywords in our given string*/
        String [] lex = user_input.split(" "); /*split them based on spaces in between*/
        size_of_array = lex.length;
        
        String [] keywords = new String[6]; /*give the same number in the inner array as well*/
        keywords[0] = "if";
        keywords[1] = "else";
        keywords[2] = "is";
        keywords[3] = "throw";
        keywords[4] = "then"; 
        keywords[5] = "printf";
        keywords[5] = "for"
                ;
        
        count = 0;
        
        /*Count total number of keywords*/
        for(int i=0;i<size_of_array;i++){  
            for(int j=0;j<6;j++){
                if(lex[i].equals(keywords[j])){
                        count++;
                        break;
                }
            }/*end of inner loop*/
        }/*end of outer loop*/
        System.out.println("Number of keywords: " +count);
        
    }
}