In Java please. Implement a class that simulates a traffic light. The next method advances the color in the usual way, from green to yellow to red, then again to green. Provide two constructors, as described in the documentation of the public interface. Also supply a method that yields the number of times that this traffic light has been red. Help me with this code (fill in /* Your code goes here */): /** A simulated traffic light. */ public class TrafficLight { private String color; private int reds; /** Constructs a green traffic light. */ public TrafficLight() { /* Your code goes here */ } /** Constructs a traffic light. @param initialColor the initial color "green", "yellow", or "red" */ public TrafficLight(String initialColor) { /* Your code goes here */ } /** Moves this traffic light to the next color. */ public void next() { /* Your code goes here */ } /** Returns the current color of this traffic light. @return the current color */ public String getColor() { /* Your code goes here */ } /** Counts how often this traffic light has been red. @return the number of times this traffic light has been red */ public int getReds() { /* Your code goes here */ } } Second part of code that was GIVEN do not modify public class TrafficLightTester { public static void main(String[] args) { TrafficLight tl1 = new TrafficLight(); System.out.println(tl1.getColor()); System.out.println("Expected: green"); System.out.println(tl1.getReds()); System.out.println("Expected: 0"); tl1.next(); System.out.println(tl1.getColor()); System.out.println("Expected: yellow"); System.out.println(tl1.getReds()); System.out.println("Expected: 0"); tl1.next(); System.out.println(tl1.getColor()); System.out.println("Expected: red"); System.out.println(tl1.getReds()); System.out.println("Expected: 1"); tl1.next(); System.out.println(tl1.getColor()); System.out.println("Expected: green"); System.out.println(tl1.getReds()); System.out.println("Expected: 1"); TrafficLight tl2 = new TrafficLight("red"); System.out.println(tl2.getColor()); System.out.println("Expected: red"); System.out.println(tl2.getReds()); System.out.println("Expected: 1"); tl2.next(); System.out.println(tl2.getColor()); System.out.println("Expected: green"); System.out.println(tl2.getReds()); System.out.println("Expected: 1"); tl2.next(); tl2.next(); System.out.println(tl2.getColor()); System.out.println("Expected: red"); System.out.println(tl2.getReds()); System.out.println("Expected: 2"); } }
In Java please.
Implement a class that simulates a traffic light. The next method advances the color in the usual way, from green to yellow to red, then again to green. Provide two constructors, as described in the documentation of the public interface. Also supply a method that yields the number of times that this traffic light has been red.
Help me with this code (fill in /* Your code goes here */):
/**
A simulated traffic light.
*/
public class TrafficLight
{
private String color;
private int reds;
/**
Constructs a green traffic light.
*/
public TrafficLight()
{
/* Your code goes here */
}
/**
Constructs a traffic light.
@param initialColor the initial color "green", "yellow", or "red"
*/
public TrafficLight(String initialColor)
{
/* Your code goes here */
}
/**
Moves this traffic light to the next color.
*/
public void next()
{
/* Your code goes here */
}
/**
Returns the current color of this traffic light.
@return the current color
*/
public String getColor()
{
/* Your code goes here */
}
/**
Counts how often this traffic light has been red.
@return the number of times this traffic light has been red
*/
public int getReds()
{
/* Your code goes here */
}
}
Second part of code that was GIVEN do not modify
public class TrafficLightTester
{
public static void main(String[] args)
{
TrafficLight tl1 = new TrafficLight();
System.out.println(tl1.getColor());
System.out.println("Expected: green");
System.out.println(tl1.getReds());
System.out.println("Expected: 0");
tl1.next();
System.out.println(tl1.getColor());
System.out.println("Expected: yellow");
System.out.println(tl1.getReds());
System.out.println("Expected: 0");
tl1.next();
System.out.println(tl1.getColor());
System.out.println("Expected: red");
System.out.println(tl1.getReds());
System.out.println("Expected: 1");
tl1.next();
System.out.println(tl1.getColor());
System.out.println("Expected: green");
System.out.println(tl1.getReds());
System.out.println("Expected: 1");
TrafficLight tl2 = new TrafficLight("red");
System.out.println(tl2.getColor());
System.out.println("Expected: red");
System.out.println(tl2.getReds());
System.out.println("Expected: 1");
tl2.next();
System.out.println(tl2.getColor());
System.out.println("Expected: green");
System.out.println(tl2.getReds());
System.out.println("Expected: 1");
tl2.next();
tl2.next();
System.out.println(tl2.getColor());
System.out.println("Expected: red");
System.out.println(tl2.getReds());
System.out.println("Expected: 2");
}
}
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