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What is a filter? A filter is an object that can transform a request or modify a response. Filters are not servlets; they don’t actually create a response. They are preprocessors of the request before it reaches a servlet/jsp, and/or postprocessors...

What is Activity and its life cycle in Android? Activity is a Java class that controls the screen you see on an Android application. Activity life cycle refers to the series of methods that are being called when an Activity is launched. onCreate()...

Image source: pixabay.com Java is one of the most interesting programming languages I have come across since I have started to learn programming. It is fast, versatile and can be used almost for a lot of things. People tend to think that Java is difficult...

Introduction RoboGuice, also called Google Guice on Android, is an easy-to-use dependency injection framework, which can make Android development more intuitive and convenient. Using this framework, you can drastically reduce the amount of code you...

Service is the most important component in android. Service is running in background It means that it does not have user interface. It is an independent of activity means it does not matter if activity is running or destroyed, service always running...