package elearning;

import java.awt.Color;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JEditorPane;
import javax.swing.JTextArea;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.text.Document;
import javax.swing.text.Style;
import javax.swing.text.StyledDocument;

public class Help {
 
	private final Pattern keywordPattern=Pattern.compile("abstract|assert|boolean|break|byte|case|catch|char|class|const|continue|default|do|double|else|enum|extends|final|finally|float|for|goto|if|implements|import|instanceof|int|interface|long|native|new|packages|private|protected|public|return|short|static|strictfp|super|switch|synchronized|this|throw|throws|transient|try|void|volatile|while");
	private final Pattern commentPattern=Pattern.compile("\\/\\/.*");
	//private final Pattern commentPattern=Pattern.compile("\\/\\/.*//\n");
  // private final Pattern literalPattern=Pattern.compile("\\([a-zA-z]\\)");
	//private final Pattern literalPattern=Pattern.compile("(\\p{Punct}| )*"+"test"+ "(\\p{Punct}| )*");
	private final Pattern literalPattern=Pattern.compile("\"[a-z0-9]*\"");
	private String []theWords={"abstract","assert","boolean","break","byte","case","catch","char","class",
			"const","continue","default","do","double","else","enum","extends","final","finally","float",
			"for","goto","if","implements","import","instanceof","int","interface","long","native","new",
			"packages","private","protected","public","return","short","static","strictfp","super","switch",
			"synchronized","this","throw","throws","transient","try","void","volatile","while"};
	
	private Pattern [] holder=new Pattern[reservedWords.length];
	//private static   Matcher matcher;
	public Help(){}


	public Pattern getPattern(){
		return this.keywordPattern;
	}
	
	public Pattern commentPattern(){
		return this.commentPattern;
	}
	
	public Pattern literalPattern(){
		return this.literalPattern;
	}
	public HashMap  hashJavaWords(String text){
		Scanner scan=new Scanner(text);
		
		HashMap  temp=new HashMap();
		List  tempList=Arrays.asList(theWords);
		while(scan.hasNext()){
			String w=scan.next();
			Matcher matcher=getPattern().matcher(w);
			if(matcher.matches())
		for (int i=0; i