Question

How many String objects are instantiated by the following code segment (not including the literals)? String s1, output; s1 = "hello"; output = "\\The string reversed is: " ; for (int i = s1.length() - 1; i >= 0; i--) output += s1.charAt(i) + " " ;

Answer 1

Two

Step-by-step explanation:

In object oriented programming, instantiation of a class means an object is created from a class template. To instantiate a class, the syntax is as below:

ClassName objectName;

In this case, we have a program statement:

String s1, output;

The String is a class. s1 and output are the variables of the objects created from the String class. Therefore s1 and output are two string objects instantiated from the String class.