+ "" empty string

Hi Jordan,

If you want to represent any object as a string, toString() method comes into existence. The toString() method returns the string representation of an object.

I am not sure whether concatenation of strings using the + operator is the same as using the toString() method but I found this example:

If you create a "name" String variable and concatenate your first and last name the compiler makes crazy things for you:

The Java compiler transforms this line of code:

String name = "Jordan" + " Ernst";

into this:

String s=(new StringBuilder()).append("Jordan").append(" Ernst).toString();  

So String concatenation is implemented through the StringBuilder (or StringBuffer) class and its append method. In contrast to this you can override the toString method and it will do whatever you want.

In my opinion concatenation and toString are not the same.

Grigorij