Java is a general-purpose, class-based programming language with few implementation dependencies. It is a computing platform used to create applications. As a result, Java is lightning-fast, safe, and dependable. It is utilised for Java application development in laptops, data centres, game consoles, scientific supercomputers, cell phones, and other devices. To gain more knowledge about What is Java and its Components Join JAVA Training in Chennai at FITA Academy, where you can gain excellent training with a completed course certificate.
Components of JAVA:
A Java Programmer creates a programme in Source Code, a human-readable language. As a result, the CPU or Chips never comprehend the source code produced in any programming language. These computers can only understand one thing, which is known as machine language or code. These machine codes execute on the CPU. As a result, various machine codes would be used for different CPU models. All of these functions take place within the three Java platform components listed below:
Java Development Kit(JDK):
The Java Development Kit (JDK) is a software development environment for creating applets and Java applications. JDK is an abbreviation for Java Development Kit. It is available for Java developers on Windows, macOS, Solaris, and Linux. JDK assists them in writing and running Java programmes. It is feasible to run multiple JDK versions on the same computer.
Why Use JDK?
The following are the primary reasons for utilising JDK:
- JDK contains the tools needed to write Java programmes, and JRE is used to run them.
- It includes a compiler, a Java application launcher, an applet viewer, and other tools.
- The compiler turns Java code into byte code.
- The Java application launcher starts a JRE, loads the required class, and runs its main function.
Java Virtual Machine(JVM):
The Java Virtual Machine (JVM) is a runtime environment that drives Java code or applications. It translates Java bytecode into machine code. The Java Virtual Machine (JVM) is a Java Run Environment (JRE) component. The compiler in other programming languages generates machine code for a specific system. On the other hand, the Java compiler generally generates code for a Virtual Machine known as the Java Virtual Machine.
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Why is JVM used?
Here are the important reasons to use JVM:
- JVM is a platform-independent method of running Java source code.
- It has a more number of libraries, tools, and frameworks.
- You can run a Java programme on any platform and save time.
- JVM includes a JIT (Just-in-Time) compiler, which translates Java source code to low-level machine language. As a result, it runs faster than a standard application.
JRE (Java Runtime Environment)
JRE is a piece of software used to run other programmes. It includes the class libraries, the loader class, and the JVM. To put it simply, JRE is required to run a Java programme. If you are not a coder, you only need JRE to run Java programmes, not JDK.
Why should you use JRE?
The following are the important reasons for using JRE:
- JRE includes class libraries, a Java Virtual Machine, and other supporting files. It does not include Java development tools such as a debugger, compiler, etc.
- It extensively uses package classes such as math, swing, util, lang, awt, and runtime libraries.
- If you want to run Java applets, you must have JRE installed on your system.
Conclusion:
In this Blog, you would have understood Java and its Components. Join Java Training in Bangalore, where our professional trainers will train you with real-time applications and many more examples.