The level1Cutoff variable within the setElite method does not change the level1Cutoff instance variable for elite customers

  It is illegal to declare the level1Cutoff variable within the setElite method

 The level1Cutoff class variable shadows the level1Cutoff variable within the setElite method

   The code within the setElite method changes the value of the instance variable level1Cutoff for elite customers

Throw an exception only when the problem can be handled.

Throw an exception as soon as a problem is detected, but only catch exceptions when the problem can be handled. 

All exceptions should be handled where they are first detected.

All exceptions should be handled at the top of the chain of methods.

O(nlog₂n)

O(n)

O(1)

O(n²)

O(nlog₂n)

O(n)

O(1)

O(n²)

O(n)

O(1)

O(n²)

log n

cannot be constructed by classes other than LinkedList

the  getData method cannot access instance variables of the LinkedList class

can be constructed in a LinkedList method

it stores a reference for the enclosing LinkedList object

Abstract classes can have instance variables but interfaces cannot. 

Abstract classes can have constructors but interfaces cannot. 

Abstract classes can have concrete methods but interfaces cannot. 

Both abstract classes and interfaces can have instance variables. 

A Java interface must contain more than one method.

All methods in a Java interface must be abstract.

A Java interface defines a set of methods that are required.

A Java interface specifies behavior that a class will implement

A subclass inherits methods and instance variables from its superclass.

A subclass inherits methods from its superclass but not instance variables.

A subclass inherits instance variables from its superclass but not methods.

Use an anonymous class to implement polymorphism. 

Use an anonymous class to implement a callback. 

Use an anonymous class when all methods of the class will be static methods. 

Use an anonymous class when the program will only need one object of the class.