java programming 67

13: Traffic Light Device

Design a 3 light traffic light object using a UML Diagram.

Think about the attributes of a traffic light. It has the states, Red, Yellow, and Green. It can also be in a blinking mode. Powered off is also a state but we will not need to program for that.

Create a program that is a class for a the Traffic light. See the Section Things to know this week.

This class needs methods to set the states for Red and Yellow and Green. It also needs a method to show the current state and if it is blinking.

Once that is done, the program should do the following.

1. Create an object ( just 1 ) that uses the Traffic Light class. This can be references in main().

2. Using a method in the object class, set the light color to green. Using a method in the object class, report the current state.

3. Using a method in the object class, set the light color to yellow. Using a method in the object class, report the current state.

4. Using a method in the object class, set the light to flashing. Using a method in the object class, report the current state.

Deliverables include the UML diagram and Java program.

Sample output:

<strong>Light is Green - Flashing = false</strong>

<strong>Light is Yellow - Flashing = false</strong>

<strong>Light is Yellow - Flashing = true</strong>

 

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