为了更好地组织类，Java提供了包机制，用于区别类名的命名空间。 包的作用 1 把功能相似或相关的类或接口组织在同一个包中，方便类的查找和使用。 2 如同文件夹一样，包也采用了树形目录的存储方式。同一个包中的类名字是不同的，不同的包中的类的名字 ...

The Java Extension Mechanism is described in the Java Tutorial as a “standard, scalable way to make custom APIs available to all applications running on the Java platform.” As described in ...

Watch out Oracle, Pivotal is offering a lighter alternative to the Java Enterprise Edition (JEE) stack. The company has collected many of its technologies into a single integrated package, called the ...

You can write a simple generic launcher in the following way: public class Launcher{ public static void main(String[] args){ if (args.length>0) { try { Command ...

Canonical has announced that OpenJDK 11 has replaced OpenJDK 10 as the default Java package in Ubuntu 18.04 LTS. Canonical recently released Ubuntu 19.04 which also uses OpenJDK 11 as default, the ...