1. Performance Overview of String Concatenation

    Today I decided to test different ways of concatenation. I chose concatenation with "+" operator, String.format(...) and StringBuilder. I wrote simple code for determining time in milliseconds for each test.

    Source Code:

    package test;
    import java.util.Iterator;
    import java.util.TreeSet;
    public class Main {
        private static final double A ...
    Tagged as : Java
  2. Force cmd.exe to see PATH again

    Did your command line stop seeing files inside PATH? Do you think it's a virus or a bug and just wanna pull down your system? Don't hurry up if so. I had the same problem and finally I fixed it today. I'm not sure why did this ...

    Tagged as : Windows
  3. How did I configure Ubuntu

    As they say there are two types of administrators: who do backups and who already do :) Unfortunately I began to think about this too late and as result I had to reinstall my system and configure it from scratch. In this article I'm describing how I did most steps ...

    Tagged as : Linux Ubuntu
  4. Usage of Oracle Database via JDBC

    In this article I want to show you how to use Oracle Database via JDBC. I'm going to describe the easy way of connection to database, creation of table, and fetching, inserting, updating and deleting rows in created table (CRUD).

    What do you need for this?

    First of all ...

    Tagged as : Java SQL

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