Java Compiler Error: Missing JDK - How to Fix

You're getting a 'No compiler detected' error in Java? This usually means you're currently running on the JRE (Java Runtime Environment) instead of the JDK (Java Development Kit). The JDK is essential for compiling Java code because it contains the compiler. To fix this issue and compile and run Java code, ensure you've installed and are using the JDK instead of just the JRE.