The catch clause specifies the types of exceptions that the block can handle, and each exception type is separated with a vertical bar (|). try { // ... } catch (IOException | SQLException ex) { logger.log(ex); throw ex; } NOTE: An exception can not be a subtype or supertype of…

Java 9 introduced private methods and private static method in interfaces. In Java 9 an interface can have seven different things: constant variables (since Java 1.0) abstract methods (since Java 1.0) nested types (since Java 2.0) default methods (since Java 8.0) static methods (since Java 8.0) private methods (since Java…

Traditionally Arrays are everywhere. Some of the common problems with arrays in earlier java implementations was on how to compare them. prior to Java 8 post Java 8

Got stuck with checking tabs & new lines String isBlank() is used to test if the string is empty or contains only white space characters. String.isBlank() does not check length of string String isEmpty() is used to test if the string is empty. String.isEmpty() checks length of string

Unit tests should be small tests (atomic), lightweight, and fast. However, an object under test might have dependencies on other objects. It might need to interact with a database, talk to a web service or a message queue. All these services might not be available during unit testing. Even if…

Prerequisites You have created a Java project in IntelliJ IDEA. You have JUnit 4 or JUnit5 on the classpath, either by adding a test library, or adding a dependency in Gradle. Creating Your First Test In your production code in the editor, place the caret at the class for which…

Introduction During development the first thing we do is develop, run and test. And this cycle repeats until the release or developer is satisfied. This testing the same thing again and again is repetitive and developer could miss a test. …

Git is a fantastic choice for tracking the evolution of your code base and collaborating efficiently with your peers. Even though threshold for a qualifying a repository as “massive” is pretty high, they’re still a pain to clone. The first solution to a fast clone and saving developer’s and system’s…

The roads nowadays can pose a challenge to any driver. That’s why your car needs the right tools to conquer the road ! Secret of Happy Living Nowadays everyone is running after success but everyone’s basic objective is to be happy. Everybody wants to have a happy fulfilled life, everybody wants happiness. Without happiness…