The value of the local variable is not used

Question

all of the variables above have the warning in the title. Could you please tell me why that is happening?

public class DataTypes {
    public static void main(St         


        

Answer 1

You have defined the variables: x, y, ssn, phone, num and twoLine. But you never use the variables anywhere in the code. For instance, if you print the variables out:

System.out.println(x + y + ssn + phone + num + twoLine);

All the warnings should disappear

Answer 2

The variables you declared are never used, only assigned to, therefore you're being warned.