Checking Java Version by Windows Command Line

If you are unsure what java version you currently have. You can check by jsut opening your cmd windows.

simply type "java -version" and execute the command in your cmd.

It best to be sure you are having the latest version of Java. each newer version is updated with better security and efficiency every time they launch an update.

POSGreSQL Experience is Waiting

I am about to learn how to play with POSGreSQL relational database management.

Cant wait to put my hand on it.

glad  there are so many excellent open source out there.

I have installed the Software.Successfully execute simple view all records from table,
The documentation for installation is quiet clear.

For now i notice  there are differences between sql server query and postgresql, auto increment keyword for postgresql is "serial" instead of identity(1,1).

So if I want to switch postgresql, I will have to identify and learn key word used in the tool. so fari see no big differences in between two technology.

https://www.bigsql.org/docs/accesspg_win/accesspg_win.jsp

a Bit About Me

a Bit About Me

I am currently working as an ETL Software Engineer in Investment and Insurance industry.
At the moment i am blogging to share with everyone some tiny lesson that I have learn or simply have the mood to share.

I am using some of my spare time to do some reading about technology and learning and sharpen rusty new skill.

credit picture: www.ecs.k12.ny.us/

Java Framework : Why Use Java Framework

Java Framework is a framework/platform for a developer to use as a launch pad to develop their software.

How Java framework help developer ease and enhance their software/web application development?
The framework has provide ready made functionality and some critical function/infrastructure for developer to take and apply.

For example, if developer need connect their code with database, We can used JDBC function that is already provided in the framework. So developer don not have to code from scratch.

I recall when I was a doing development as a junior. I did not adopt framework in my work. So we had to do much of everything from zero and only using a portion of standard edition API for our project.

If we adopt Java framework much earlier, such as SPRING, We could save much of our development time. It is important to take initiative to learn the framework as it will accelerate our productivity and development timeline.

Java Web Logic

Java Web Logic is a Web server program. It is a middle tier in between client application and server based system/application.

example

Example of Web Logic Server relation

Java Conceptual Design

 This is a conceptual design for Java 8.

Java 8 Conceptual Design

Why we are having ++X and X++ increment?

What is the different between ++X and X++ (Prefix and Postfix Increment )

a) Function of ++X and X++
++X
- Increment X value then Execute

X++
- Execute old X value then Increment

b)
We need both of the increment type depend on the need of our logic.

Postfix Increment will be useful if we want to make use of old value in our execution before we increment it.

Prefix Increment Is useful when we need the increment value right away in our execution.