Given the code fragment: What is the result?

Given: What is the result?

Given:
public class String1 {
public static void main(String[] args) {
String s = "123";
if (s.length() >2)
s.concat("456");
for(int x = 0; x <3; x++)
s += "x";
System.out.println(s);
}
}
What is the result?

Given the code fragment:

Test.java:

Which is the result?

You are asked to develop a program for a shopping application, and you are given this information:
* The application must contain the classes Toy, EduToy, and ConsToy. The Toy class is the superclass of the other two classes.
* The int calculatePrice (Toy t) method calculates the price of a toy.
* The void printToy (Toy t) method prints the details of a toy.
Which definition of the Toy class adds a valid layer of abstraction to the class hierarchy?