Introduction to Java
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Java is a programming language that is both compiled and interpreted.
Code conversion:
The source code (the one we write) gets compiled into byte code (a code only understood by machines), and later the byte code gets interpreted by JVM (Java Virtual Machine) and finally executed and displays the result.
Compiled -> Scans the entire code in one go and then executes (if no error exists).
Interpreter -> Scans each line of code and executes it(if no error exists).
/ Simply speaking, some English teachers read the entire chapter in one go and gives a summary (Compiler way), while some other explains each line(Interpreter way).
Requirements:
Running Java programs requires JDK (Java Development Kit) and JRE (Java Runtime Environment).
Note: Java is a statically typed language meaning every variable must be declared before using it.