Java Grammer for beginner

In this post, I would like to show common knowledge in Java langage grammer for beginner.

🍄 Naming rule of package

In Java and Kotlin, “package name” is all lowercase letters and there is not separator between words.

🍣 Return empty array

If you want to initialize a string to have a length 0 from a function, please write as follows:

return new String[] {};

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