External Sort Java

Is there a specific reason why Java does not have an in-built external sort algorithm implemented 开发者_开发技巧?

Because the JDK contains only the mostly used components.

It is the same thing with any external framework content. Why isn't it directly built-in ?

Simply because it doesn't need to be built-in. And because it's not developed by the same people.

But still you can use an external framework, or a library which will help you with that.

Resources :

• code.google.com - externalsortinginjava

I don't think any modern language has external sorting built-in. Usually, it's just not part of the scope of a programming language. Also, think of embedded (or specialized) devices that have limited (or no) external memory, only RAM. Language features such as external sorting would be purposeless.