What is a Java compiler? A Java compiler is a program that takes the text file work of a developer and compiles it into a platform-independent Java file. Java compilers include the Java Programming ...

Architecture of a Java application: ... When the interpreter detects this situation, ... tools.jar contains the Java compiler’s class files — the compiler is a Java application.

The Java compiler was originally written in C, using some C++ libraries. Later JVM releases added a JIT compiler to speed up the interpreter. The current Java compiler is written in Java, although ...

But bytecode compilation is a performance factor that can't always be dismissed. Java is the most popular interpreted language on the planet. Others include Python, Scala, Ceylon and Groovy.