example.text

	public String createMD5Hash (String token) {
    	String s = token;
    	MessageDigest m;
    	String returnstring = null;
    	try {
    		m = MessageDigest.getInstance("MD5");
    		//m.reset();
    		m.update(s.getBytes(),0,s.length());
    		returnstring = new BigInteger(1,m.digest()).toString(16);
    		System.out.println("MD5: "+ returnstring);
    	} catch (NoSuchAlgorithmException e) {
    		e.printStackTrace();
    	}
    	return returnstring;
    }

--------------------------------

include java.security.*;

... etc

sessionid="12345";
        
byte[] defaultBytes = sessionid.getBytes();
try{
	MessageDigest algorithm = MessageDigest.getInstance("MD5";
	algorithm.reset();
	algorithm.update(defaultBytes);
	byte messageDigest[] = algorithm.digest();
            
	StringBuffer hexString = new StringBuffer();
	for (int i=0;i<messageDigest.length;i++) {
		hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
	}
	String foo = messageDigest.toString();
	System.out.println("sessionid "+sessionid+" md5 version is "+hexString.toString());
	sessionid=hexString+"";
}catch(NoSuchAlgorithmException nsae){
            
}