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We can assign a value either in the declaration or later. Blank Final in Java – A final variable in Java can be assigned a value only once.Scope of Variables – The scope of a variable is the part of the program where the variable is accessible.It is the basic unit of storage in a program. Variables in Java – A variable is a name given to a memory location.Data types in Java – Get to know what types of data types are supported by the Java programming language.Java Identifiers – In Java, an identifier can be a class name, method name, variable name, or label.Java Class File – Basic entry point of Java programming, which is writing the main class.The Hello World Example – The first Hello World program in Java.Setting up the environment – Setup IDE for writing programs in Java.How to start learning Java – understand the core introduction of the Java programming language.Step-by-Step Guide to Learn Java for Android App Development Essential collections in Java required for Android Development.Object-Oriented Programming Concepts in Java.So in this article, we have covered the following things: External Storage in Android with Example.How to Post Data to API using Retrofit in Android?.How to Fix “Failed to install the following Android SDK packages as some licenses have not been accepted” Error in Android Studio?.Image Slider in Android using ViewPager.How to Retrieve Data from the Firebase Realtime Database in Android?.How to View and Locate SQLite Database in Android Studio?.Fix "Unable to locate adb within SDK" in Android Studio.How to change the color of Action Bar in an Android App?.How to Install and Set up Android Studio on Windows?.How to Push Notification in Android using Firebase Cloud Messaging?.How to Change the Color of Status Bar in an Android App?.How to Add and Customize Back Button of Action Bar in Android?.Content Providers in Android with Example.How to Create and Add Data to SQLite Database in Android?.How to Update Gradle in Android Studio?.Broadcast Receiver in Android With Example.Android Projects - From Basic to Advanced Level.How to Change the Background Color of Button in Android using ColorStateList?.