11. + Operator



Answer:
Yes: in output statements like this:
System.out.println( "Result is:" + result );
The + operator is a short way of asking for concatenation. (If result is a number, 
 it is first converted into characters before the concatenation is done.)


+ Operator


stringConcat








Here the + operator is used instead of using the concat() method:



    
String first = "Red " ;
String last  = "Rose" ;
String name  = first + last ;




String concatenation, done by concat() or by +, always constructs a new object based on data in other objects. Those objects are not altered at all.


When the operands on either side of + are numbers, then + means "addition". If one or both of the operands is a String reference, then String concatenation is
    performed. When an operator such as + changes meaning depending on its arguments, it is said to be overloaded.








Question 11:
Say that the following statement is added after the others:
    String reversed = last + first;
Does it change first, last, or name?