Using Data

When data cannot be changed after a class is compiled, the data is ____________.

• variable
• constant
• volatile
• mutable

Which of the following is not a primitive data type in Java?

• boolean
• byte
• sector
• int

Which of the following elements is not required in a variable declaration?

• a type
• an identifier
• an assigned value
• a semicolon

The assignment operator in Java is ____________.

• =
• ==
• :=
• ::

Assuming you have declared shoeSize to be a variable of type int, which of the following is a valid assignment statement in Java?

• shoeSize = 9;
• shoeSize = 9.5;
• shoeSize = ”nine”;
• Two of the above are valid.

Which of the following data types can store the value 0 using the least amount of memory?

• short
• long
• int
• byte

A boolean variable can hold ____________.

• any character
• any whole number
• any decimal number
• the value true or false

The value 137.68 can be held by a variable of type ____________.

• int
• float
• double
• Two of these are correct.

An escape sequence always begins with a(n) ____________.

• e
• forward slash
• backslash
• equal sign

Which Java statement produces w on one line and xyz on the next line?

• System.out.println(“wxyz”);
• System.out.println(“w” + “xyz”);
• System.out.println(“w\nxyz”);
• System.out.println(“w\nx\ny\nz”);