Java Compatibility

JVM language, the JDK tools and runtime.All Java pages

Java class file major version by release: 52 is Java 8, 61 is 17, 65 is 21Class file major version by Java release: 8 is 52, 11 is 55, 17 is 61, 21 is 65. Why an older JVM rejects newer classes and how javac --release sets it.