aim4.im

Enum LightState

java.lang.Object

java.lang.Enum<LightState>

aim4.im.LightState

All Implemented Interfaces:

Serializable, Comparable<LightState>

public enum LightState
extends Enum<LightState>

Possible states of traffic lights.

Enum Constant Summary

Enum Constants

Enum Constant and Description
GREEN Cars may cross the intersection.
RED Cars may not cross the intersection.
YELLOW Cars will soon not be able to cross the intersection.

Method Summary

Methods

Modifier and Type	Method and Description
abstract Color	getColor() Get the Color associated with this LightState.
static LightState	valueOf(String name) Returns the enum constant of this type with the specified name.
static LightState[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

RED

public static final LightState RED

Cars may not cross the intersection.

YELLOW

public static final LightState YELLOW

Cars will soon not be able to cross the intersection.

GREEN

public static final LightState GREEN

Cars may cross the intersection.

Method Detail

values

public static LightState[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (LightState c : LightState.values())
    System.out.println(c);

Returns:

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

valueOf

public static LightState valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

getColor

public abstract Color getColor()

Get the Color associated with this LightState.

Returns:

the Color associated with this LightState