How to search every file on a computer in java

Question

Hey guys, right now im writing a mac antivirus (i mostly use windows)
i have the test code to search for hex code clips i have another file to use so i can replace it using a updater to make getting new virus terms more easy. but what it the way to go through and read every file? i can set a file, but i need a way for it to run though the computer like a read antivirus
plz help guys, you guys are the best

Answer 1

ohh so u know im not lying, his was a first draught from a while ago
import java.io.*;
class AntiVirus
    public static void main (String args[])
          //bin = new Signature(file);
          File f = new File("junk.dll");
          //File f = new File("Test20041025.java");
          if ((int)f.length() > Integer.MAX_VALUE) {
               System.out.println("Not enough memory to read file.");
               System.exit(-1);
          byte[] bytes = new byte[(int)f.length()]; // assume < 2gb
          RandomAccessFile raf = null;
          try
                raf = new RandomAccessFile(f,"r");
                raf.readFully(bytes);
                raf.close();
          catch (Exception e)
               System.out.println(e.toString());
               System.exit(-1);
          //String result = new String(bytes /*, encoding*/ );
          //byte[] testPatternB = new byte[testPatternS.length];
          int[] testPatternS = { 0x07, 0x08, 0x09, 0xAB, 0xBF, 0x62, 0x04 };          
          byte[] testPatternB = new byte[testPatternS.length];
          int[] testPatternS2 = { 0x07, 0x08, 0x09, 0xAB, 0xBF, 0x62, 0x04 };          
          byte[] testPatternB2 = new byte[testPatternS.length];
          for (int i = 0; i < testPatternS.length; i++)
               testPatternB[i] = (byte)testPatternS;
          for (int i = 0; i < testPatternS2.length; i++)
               testPatternB2[i] = (byte)testPatternS2[i];
          String pattern = new String(testPatternB);
          String fileBytes = new String(bytes);
          String pattern2 = new String(testPatternB2);
          //System.out.println(fileBytes.indexOf(pattern));
          if(fileBytes.indexOf(pattern) > 0 && fileBytes.indexOf(pattern2) > 0 ) // if a file is found it its a random number 1-??? so i do a check to tell
          System.out.println("You Have a Serios Virus");