backwards compatibility is still highly valued. Code no longer compiling in newer versions of the languages can create huge churn. It's one of the reasons Java

backwards compatibility is still highly valued. Code no longer compiling in newer versions of the languages can create huge churn. It's one of the reasons Java is so widely used, you can still use Java 1.4 libraries in Java 13 and most 1.4 code will keep working and compiling.