关于“此”用法

Question

I am studying Java language.

When I studied about keyword this , I wonder if I can allocate other object to this .

for example, If I make a method that its parameter is an object, Can I make a current object refer a parameter object using this keyword?

Answer 1

No you can't. In a sense this is implicitly final : ie it cannot be changed to refer to a different object.

Also, you can't deviate from the language's definition of this . It's a keyword so therefore cannot be used for anything else.

Answer 2

You cannot, this is a Java Keyword.

Look at the oracle site for all keywords.

Here is a list of keywords in the Java programming language. You cannot use any of the following as identifiers in your programs. The keywords const and goto are reserved, even though they are not currently used. true, false, and null might seem like keywords, but they are actually literals; you cannot use them as identifiers in your programs.

Answer 3

The this keyword in Java is much like the I word in english. It is obviously insane to image that you can point this at a different object in the same way you cannot make " I am wearing a blue shirt " to imply the colour of anyones shirt than your own.