the above mistake cost me close to 1 hour. Can you spot the mistake? I tried all these possibilities: model.put(“validation_success”,1); model.put(“validation_success”,true); model.put(“validation_success”,”true”); and then realized my stupid mistake. I have installed sonar […]
Behavior Driven Development (BDD) of Postfix calculator
What is a postfix expression? An expression where in the operator is placed after the operands is called a postfix expression. For example an expression (also called infix expression) 2 + 3 […]
Gotcha: Migrating from Spring Security 3.2.x to Spring Security 4.x
Here is a simple gotcha to keep in mind while migrating to newer Spring Security version 4.x from Spring Security 3.2.x What’s the problem? The Spring security configuration expressions hasRole(‘role_name’) and hasAuthority(‘role_name’) […]
Command to find files from windows command prompt
So if you want to find files with a given extension in windows, this is how you would do: where, /r says recursively search and match for files with given pattern, and […]
New @RequestParam annotations in Spring Boot 1.4 (Spring Framework 4.3)
Earlier in Spring/Spring Boot to Map a GET or POST or DELETE or any HTTP method request handler we would write something like below: But with Springframework 4.3 and Spring Boot 1.4 […]
Java Gotcha: Parse string using SimpleDateFormat with months greater than 12
I was the other day trying to parse a date string into a date object using SimpleDateFormat to check for the validity of the date string. I had the SimpleDateFormat defined as: […]
Installing Elasticsearch on Linux
Download the Elasticsearch distribution, note the version you want to use Make sure you have Java 7. Verify by java -version. If not find out the value of $JAVA_HOME by using echo […]
Book Review: Murach’s HTML5 and CSS3, 3rd Edition
Murach’s HTML5 and CSS3, 3rd Edition is a one stop solution to solve all your learning requirements for developing the front end of your applications. The books starts with introduction to HTML […]
Setting up sharded mongodb cluster in localhost
I have been playing around with MongoDb, thanks to the M101J Course offered by Mongodb University. These NoSQL datastores are gaining popularity due to a number of reasons and one among them […]
Getting rid of Getters and Setters in your POJO
We all have read in Java books about encapsulation of fields in Java class and also when ever you code you are asked to take special care in encapsulating the fields and […]
