Examples Questions

Figuring out how to ask questions in a technical class can be a learning process all its own. Here's a breakdown with examples to get the process started. Try to be as specific as you can.

I need a break down!

• What does this error message mean exactly?

The method rect(float, float, float, float) in the type PApplet is not applicable for the arguments (int, int).

Syntax!

• What does "void" mean?
• I keep seeing token in error messages. What is it?
• I keep seeing NullPointerException in error messages. What is that?
• What is the plus for here?

println("Position: " + x);

Whys and Whatfors?

• Why are floats called float?
• Why would I make a number a variable that's never going to vary?
• What's the difference between "mousePressed() and mousePressed"?

Hows and Can Is

• How do I create an alternating pattern?
• How do I highlight something when I mouse over it?

More examples please.

• What are some other mouse effects?

What do the 8 numbers in a quad line of code mean?

quad(138, 131, 186, 120, 169, 263, 230, 276);