GROUNDWORK
Chapter 1 - Your First Programs

Name: ________________________________     Date: ______________

Fill in every blank. Where a term is asked for, write the word the course
uses. Where code is asked for, write exact Java. Where output is asked
for, write what the program prints, one line per line.


VOCABULARY
----------

 1. A __________________ is a list of instructions written in an order a
    computer can follow.

 2. The __________________ method displays something on the screen and
    then ends the line; it is how a program tells you what it is doing.

 3. Text inside quotes, like "hello", is called a __________________.

 4. Everything from // to the end of a line is called a
    __________________, and Java ignores it completely.


READING CODE
------------

 5. What does this print?

        IO.println("Hydrogen" + "Helium" + "Lithium");

    ____________________________________

 6. What does this print?

        IO.println(3 + 4);
        IO.println("3 + 4");
        IO.println("3 + 4 = " + (3 + 4));
        IO.println("3 + 4 = " + 3 + 4);

    ____________________________________

 7. What does this print?

        // This line does nothing
        IO.println("Done");

    ____________________________________

 8. What does this print?

        IO.println("A");
        IO.println("B" + "C");
        IO.println();
        IO.println(2 * 3);
        IO.println("2 * 3");

    ____________________________________

 9. What does this print?

        IO.println("Section 1");
        IO.println();
        IO.println("Section 2");

    ____________________________________


WRITING CODE
------------

10. Complete this line so it prints the text 3 + 4 exactly, with no
    arithmetic performed: IO.println(__________________);

11. Complete this program so a blank line separates the two sections:
    IO.println("Section 1"); __________________ IO.println("Section 2");

12. Complete this line so it prints Hydrogen Helium Lithium, with a
    single space between the words:
    IO.println("Hydrogen" + __________________ + "Lithium");


WHY IT WORKS
------------

13. Java runs the instructions in main one at a time, from
    __________________ to __________________, which is why swapping the
    order of two IO.println lines changes the order of the output.

14. Without quotes, 3 + 4 is __________________ that Java works out and
    prints as 7; with quotes, "3 + 4" is __________________ that Java
    prints exactly as written.

15. When a program does not compile, the first line of javac's message
    names the file, the __________________ number where javac noticed
    the problem, and the problem itself; under a copy of that line, a
    __________________ (^) points to the spot.