Introduction To JAVA

JAVA is a programming language that is utilized in the development of Android apps. It is a class-based and object-oriented programming language with C++ syntax. Java is the technology of choice for developing programs that use managed code and can run on mobile devices. JAVA's key aims are to be straightforward, object-oriented, robust, secure, and high-level.
JVM (JAVA Virtual Machine) is used to execute JAVA applications, however, Android has its virtual machine called Dalvik Virtual Machine (DVM) that is tailored for mobile devices.
Android is an open-source software platform and mobile operating system based on Linux. The Android platform enables developers to manage and control Android devices by writing managed programs in Java. As a result, knowledge of the fundamentals of the Java programming language is required for programming on the Android platform.

Android apps are typically created in JAVA using the Android SDK (Software Development Kit). Other programming languages, such as C, C++, Scala, and others, can also be used to create Android apps, but JAVA is the most popular and widely utilized.

The Choice of Java

What makes Java the technology of choice for Android mobile development? Sun Microsystems' James Gosling designed the Java Programming Language in the mid-1990s. Sun Microsystems was later purchased by Oracle. Java is extensively used across the world, owing to the extensive set of capabilities it offers. One of the key reasons for Java's popularity has been its promise to "write once and run anywhere."

Java has also made advances in embedded processor technology; the Java Mobile Edition was created for developing programs that can run on mobile devices. All of this, together with Java's rapid ascent, were key considerations in the choice to use Java as the primary development language for producing Android applications. Because Java applications execute in a sandbox environment, they are secure. Java programs are compiled into intermediate code known as bytecode. This bytecode is then run within the Java Virtual Machine environment.

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