1. Chapter 2 Clarifications
How to see the results of a statement
What is a Logical Flow?

2. What is the result of a statement? How do you see what the result is?
When you have the following code, how do you know what the result was?
public class TestMath {
public static void main(String[] args) {
Math.pow(10, 4);
}// end main
}// end class

3. Why use System. out. println();
Why use System.out.println(); ? It lets you see the result to the screen
Using System.out.println(); in the code, lets you see the result of the statement.
public class TestMath {
public static void main(String[] args) {
System.out.println(Math.pow(10, 4));
}// end main
}// end class

4. To store the result of the statement
Assigning a variable the result of a statement lets you store that in memory to be used later.
public class TestMath {
public static void main(String[] args) {
double result = Math.pow(10, 4);
System.out.println(result);
}// end main
}// end class

5. When can I perform a calculation on variables?
Can the following calculation be performed?
public class Chapter2Clarification{
public static void main(String [] args){
Scanner input = new Scanner(System.in);
int y = x * x;
int x = input.nextInt();
}// end main
} //end class

6. Does the user know he or she needs to enter data?
import java.io.*; import java.util.*; public class Chapter2Clarification{ public static void main(String [] args){ Scanner input = new Scanner(System.in); int x = input.nextInt(); int y = x * x; }// end main } //end class

7. How informative is this to the user?
public class Chapter2Clarification{ public static void main(String [] args){ Scanner input = new Scanner(System.in); System.out.println("Please enter a number:"); int x = input.nextInt(); int y = x * x; System.out.println(y); }// end main } //end class

8. Useful information is now provided to the user
public class Chapter2Clarification{ public static void main(String [] args){ Scanner input = new Scanner(System.in); System.out.println("Please enter a number:"); int x = input.nextInt(); System.out.println("Your number is " + x); int y = x * x; System.out.println(y + " is " + x + " squared."); }// end main } //end class