Enum Class DiscountType

java.lang.Object

java.lang.Enum<DiscountType>

challenge.lv2.DiscountType

All Implemented Interfaces:

Serializable, Comparable<DiscountType>, Constable

public enum DiscountType
extends Enum<DiscountType>

다양한 할인 유형을 정의하는 열거형(enum) 클래스 각 할인 유형은 가격에 따라 다른 할인 정책을 적용합니다. 할인 유형:

• Coupon - 10,000원 이상일 때 3,000원 할인
• Cash - 10% 할인
• General - 할인 없음

할인이 적용되는 함수인 discountPrice는 DiscountStructure를 구현했습니다. 각 할인 유형별로 다른 할인 방식이 적용되도록 람다식을 활용했습니다.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
Cash
Coupon
General

Field Summary

Fields

Modifier and Type	Field	Description
private final DiscountStructure	discountStructure

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DiscountType(DiscountStructure discountStructure)

Method Summary

Modifier and Type	Method	Description
int	discountPrice(int price)
static DiscountType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static DiscountType[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

Coupon

public static final DiscountType Coupon

Cash

public static final DiscountType Cash

General

public static final DiscountType General

Field Details

discountStructure

private final DiscountStructure discountStructure

Constructor Details

DiscountType

private DiscountType(DiscountStructure discountStructure)

Method Details

values

public static DiscountType[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static DiscountType valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

discountPrice

public int discountPrice(int price)