Exam 3: Object-Oriented Programming, Part 1: Using Classes

The data associated with an object of a class are called __________.

The length method of the String class takes no argument and returns an int.

A Scanner object divides its input into sequences of characters called:

Identify when you would use nextLine( ) in the Scanner class.

The mutators are the _______ methods.

Using a null object reference to call a method will not generate an error.

nextDay ( ) can be used in an expression (the method header is public void nextDay( ) ).

API stands for __________.

What would you automatically use to assign the char variable to a Character object reference?

Many of the commonly used classes, such as String and Math, reside in the java.lang package.

The _________ class is used to get user input from the Java console.

The special method called when instantiating an object is a(n) __________.

The DecimalFormat can be used to format a number by specifying a number of digits after the decimal point.

The parameter list of a default constructor is empty.

The data type of System.out is:

The charAt method returns the character at a particular index in a String.

The constructor for the Random class is:

A way to convert a primitive data type into an object is to use __________ classes.

indexOf methods are useful for searching a String for a specific String or character.

Java classes are organized in __________.