Useful java conceptual diagram
Here is the link to java conceptual diagram. This illustrates the components of Oracle's Java Platform Products. Refer to this often to refresh the knowledge of java and it's tools.
Generating unique string in C#
One of the solution in C# that generates unique string. class UniqueString { private static readonly Random random = new Random(); private static readonly object syncLock = new object(); // Map to store 62 possible characters private static readonly char[] charMap = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".ToCharArray(); /// <summary> /// Generates unique string /// </summary> /// <param name="strLen">Length of the string.</param> /// <returns>Unique string of specified length.</returns> public static string GenerateUniqueString(int strLen) { if (strLen <= 0) { return null; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < strLen; i++) { lock (syncLock) // synchronize { _ = sb.Append(charMap[random.Next(62)]); } } return sb.ToString(); } public static void Main() { // generate 10 character string Console...
