Java
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Adding Custom Claims to the SAML Response – (How to Write a Custom Claim Handler for WSO2 Identity Server)
Overview The latest release of WSO2 Identity Server (version 5.0.0), is armed with an “application authentication framework” which provides lot…
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The lepidopterist’s curse: Playing with java.time
Pop quiz: What will be the output of this little program? …
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Java private, protected, public and default
You are a Java programmer, so you know what I am talking about. public modifiers make a method or field…
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Avoiding Null Checks In Java
One of the worst nightmares for java developers ( from junior to experts ) is null object reference checking. I’m…
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Avoiding Many If Blocks For Validation Checking
There are cases that we want to validate input data before we send them to business logic layer for processing, computations…
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Spring 4.1 and Java 8: java.util.Optional
As of Spring 4.1 Java 8’s java.util.Optional, a container object which may or may not contain a non-null value, is…
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A beginner’s guide to JPA/Hibernate entity state transitions
Introduction Hibernate shifts the developer mindset from SQL statements to entity state transitions. Once an entity is actively managed by…
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Keyword extraction and similarity calculation among textual content
Background Web applications are becoming smarter. Gone are the days when to avail a service from a website, user had…
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Clean JUnit Throwable-Tests with Java 8 Lambdas
Recently I was involved in a short online discussion on twitter and google+ which concerned the question why the arrival…
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