Can someone explain to me in detail the use of 'this'?

Question

I don\'t really understand the use of \'this\' in Java. If someone could help me clarify I would really appreciate it.

On this website it says: http://docs.oracle.com/ja

Answer 1

In the second example one of the arguments is named x. By referencing this.x, you mean the x field/property of the class the method is part of. It could read as: Point.x = argument x

this is being used to differentiate the two, making the meaning of the code clear.