Proponents of Java like Sun, IBM, and Oracle stress the portability of the language and operating environment, and point to its standard access to databases, portable graphical user interface development, and distributed objects, amongst other things.

• Java的拥护者，如Sun、IBM和Oracle等公司，强调该语言及操作环境的可移植性，指出它具有可对数据库进行标准化访问、可移植的图形用户接口开发和分布式对象等优点。