Identify

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;

public class CCOdeIdentify
{
    public static void main (String arg[])
    {
        try
        {
            String dest = "/home/ndub/Desktop/c.txt";

            FileReader fileReader = new FileReader(dest);
            BufferedReader bufferedReader = new BufferedReader(fileReader);

            String line;
            StringBuffer sb = new StringBuffer();

            while ((line = bufferedReader.readLine())!=null)
            {
                sb.append(line);
                sb.append(" ");
            }

            String lineout = sb.toString();

            String[] splet = lineout.split(" ");

            ArrayList<String> arr = new ArrayList<>(Arrays.asList(splet));

            ArrayList<String> keyWords = new ArrayList<>();

            if(arr.contains("#include")&& arr.contains("<stdio.h>"))
            {
                //regex pattern (# <>) check and print
            }


        }

        catch (IOException e)
        {

        }
    }
}