overloading

Overloading 是指在同一個作用域中有兩個或多個函式擁有相同的名字不同的簽名。

Overloading : 重載

函式的簽名包括：參數的數量和類型，const屬性，甚至參數的順序。當編譯器發現存在一個以上的具有相同名字的函式，它就會調用其中一個匹配的函式。java語言支持函式返回值的不同。

Overloading:

Signature has to be different. Just a difference in return type is not enough.Accessibility may vary freely.Exception list may vary freely.Just the name is reused. Methods are independent methods. Resolved at compile-time based on method signature.Can call each other by providing appropriate argument list.