All Java programs are compiled into class files that contain bytecodes, the machine language of the Java virtual machine. In this JavaWorld classic, Bill Venners goes under the hood of the JVM to ...

Java’s synchronization mechanism Java provides a synchronization mechanism for preventing more than one thread from executing code in one or more critical code sections at any point in time.

If you need to control access to certain pieces of data in a class when writing multithreaded applications, see how you can use the volatile keyword to get a similar effect as using the ...