When the native returns, not only has it not freed the global reference, but the application also no longer has a way to get the reference in order to free it later - so the object will live forever.
当本机返回时，它不仅会释放全局引用，应用程序还无法获取引用以便稍后释放它—因此，对象将会始终存在。
Programmers need only to make simple efforts to avoid non-portable pitfalls in order to live up to Sun's trademarked motto "Write Once, Run Anywhere."
程序员只需要花少量的经历就可以回避不可移植的陷阱而写出复合Sun广告语的代码来“Write one， run anaywhere.”
Live at home, hand in half a cent to spend, to save money is in, only more money in order to change the quality of life.
居家过日子，一分钱掰成两半花，再节省也是在花钱，唯有多挣钱才能改变生活质量。
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