到这里 Java 的 Hello, World! 入门程序已经到了简化，但在 Ron 眼里，该 JEP 提供的优化只是使 Java 更易于学习的第一步，像 System.out.println 这种长方法 ...

The first opcode, "getstatic", fetches a static field and pushes its value onto the stack, which in this case is the "System.out" reference, described by constant pool entry #2 and displayed in the ...

Next, open com.javaworld.sample.helloworld.Activator.java in the Eclipse Java editor. You will notice that you are now able to access the HelloService interface but not the HelloServiceImpl class.

According to the Java Enhancement Proposal 445: …these changes allow us to write Hello, World! with no access modifiers, no static modifiers, and no String[] parameter, so the introduction of these ...