java code Tutorials, Tips & Tricks

Java: How to Load CSV file into Database

Java: How to Load CSV file into Database

Loading CSV file into Database can be cumbersome task if your Database provider does not offer an out of box feature for this. Most of the time you’ll spend up in creating valid insert...

Java MD5 Hashing & Salting: Secure Your Passwords

Java MD5 Hashing & Salting: Secure Your Passwords

The MD5 Message-Digest Algorithm is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value. MD5 has been employed in a wide variety of security applications, and is also commonly used...

Batch Insert In Java – JDBC

Let’s see how we can perform batch insert in Java using JDBC APIs. Although you might already knew this, I will try to explain the basic to a bit complex scenarios. In this note,...

How To Create QR Codes in Java & Servlet

How To Create QR Codes in Java & Servlet

Nowadays, Quick Response (QR) Codes are becoming more and more useful as they have gone mainstream, thanks to the smart phones. Right from the bus shelter, product packaging, home improvement store, automobile, a lot...

Convert ArrayList to Arrays in Java

A lot of time I have to convert ArrayList to Arrays in my Java program. Although this is a simple task, many people don’t know how to do this and end up in iterating...

Double Brace Initialization in Java!

Double Brace Initialization in Java!

Few days back I came to know about a different way of initializing collections and objects in Java. Although this method of initialization has been there in Java since quite a few years now,...