When compiling and running the test case below with JDK21 using Hotspot and OpenJ9, the program behaves differently. When using Hotspot, the program executes successfully. When using OpenJ9, the ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

As the previous two code snippets above and the associated images show, the Java compiler introduces synthetic methods on an as-needed basis. When only one of the nested class’s private ...