Choose package as per developer language needs.
Open the downloaded file extension and follow the standard software installation process.
It provides various functionalities like smart code completion, text highlighting feature, various build automation tools, a debugger and many more. IDE stands for Integrated Development Environment. You must be wondering what is an IDE and why do we need it in the first place? Installing the IDE (Intellij, Eclipse etc) JRE only helps to run the code but developement tools like debugger, compiler, JavaDoc etc. So, JDK entails JRE(consisting of JVM+Libraries set)and development tools.
It is a full-featured development kit that includes development tools to provide an environment to develop Java programs and Java Runtime Environment to execute our program. So, we can deduce that JDK is the key to running and compiling our program. Java Runtime Environment is what enables a Java program to run in any operating system without modification. It combines the Java code created using JDK with the necessary libraries to run it on a JVM. It has class libraries and other resources which are needed to run a Java program. It comprises browser, JVM, applet supports, and plugins. JRE allows us to run java programs on our computers however, we cannot compile it. It is included in the Java development kit. JRE: JRE stands for Java Runtime Environment. It is thus essential to develop and run a java program on our computer. It contains development tools to provide an environment to develop java programs and JRE to execute java programs. It is the whole package entailing compiler, Java Runtime Environment ( JRE), java docs, debuggers etc. JDK: JDK stands for Java Development Kit. So, the function of JVM is to compile the bytecode and the output produced after compiling is the same across all operating systems. JVM loads the code, verifies and executes the code. JVM is the one that actually calls the main method present in a java code. In the running phase, JVM then converts the compiled bytecode into machine language.
It takes java code as input and converts it into bytecode. The compilation is performed using JAVAC compiler. As we know, java codes are first compiled into bytecodes.
It means providing a path for compiling a JAVA program and also running the same. JAVA_HOME is used for setting up the environment variable for JAVA. JDK is full-featured development kit which includes development tools to provide an environment to develop Java programs and Java Runtime Environment to execute our program. Java IDEs are the IDEs that are developed for making the process of building any java application much faster and easier. An Integrated Development Environment (IDE) is a software that acts as a text editor, debugger, and compiler all in one.