Java Variables, Input and Output

What values can a boolean variable store?

• true

• false

• hum hum

• 4

The value 'e' would be best stored in a _____ type of variable.

• char

• int

• double

• boolean

An int type variable can only store

• whole numbers

• real numbers

• zeroes

• Numbers less than 1000

We store real numbers in this type of variable:

• double

• single

• int

• char

To store text like a name or address we use this type of variable:

• String

• text

• letters

• string

To output or display data on the screen we use:

• System.out.println()

• Print()

• System.display()

• JOptionPane.toScreen()

The shortcut for System.out.println is:

• sout <TAB>

• salt <TAB>

• sop <TAB>

• <Ctrl> <P>

To output a String and an int next to each other we use this character to join them:

• +

• ,

• SPACE

\t in a print statement causes this to be printed:

• a tab

• a small t

• a backslash and a t

To input data use this command:

• JOptionPane.showInputDialog("")

• JOptionPane.showInput("")

• JOptionPane.inputData("")