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TrafficLight.java
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TrafficLight.java
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import java.awt.Dimension;
import java.awt.Insets;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
/*
* Benjamin Marquis
* CMSC 335
* 12/14/2021
* Project 3
* TrafficLight.java
* This is the TrafficLight class
*/
public class TrafficLight extends JLabel implements Runnable {
public JLabel greenLabel, yellowLabel, redLabel;
public volatile String color = "red";
public static ImageIcon redLight = new ImageIcon("RedLight.png");
public static ImageIcon greenLight = new ImageIcon("GreenLight.png");
public static ImageIcon yellowLight = new ImageIcon("YellowLight.png");
public AtomicBoolean running = new AtomicBoolean(true);
public AtomicBoolean pause = new AtomicBoolean(false);
public AtomicBoolean isRed = new AtomicBoolean(true);
public Dimension lightSize;
public Insets inset;
public int i;
public Thread t;
// constructor
public TrafficLight(int i, Insets inset) {
super(redLight);
isRed.set(true);
this.inset = inset;
lightSize = this.getPreferredSize();
this.setVisible(true);
this.setBounds(inset.left - 20 + (i * 500), inset.top + 305,
lightSize.width, lightSize.height);
greenLabel = new JLabel(greenLight);
yellowLabel = new JLabel(yellowLight);
redLabel = new JLabel(redLight);
running.set(true);
t = new Thread(this);
}
@Override
// runnable method
public void run() {
// infinite loop
while (true) {
// while running and not paused
while (running.get() && !pause.get()) {
// if color is red
if (running.get() && !pause.get() && color == "red") {
isRed.set(true);
try {
t.sleep(12000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
}
if (!pause.get() && color == "red") {
super.setIcon(greenLight);
color = "green";
isRed.set(false);
} else {
continue;
}
}
// if color is green
if (running.get() && !pause.get() && color == "green") {
try {
t.sleep(10000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
}
if (!pause.get() && color == "green") {
super.setIcon(yellowLight);
color = "yellow";
isRed.set(false);
} else {
continue;
}
}
// if color is yellow
if (running.get() && !pause.get() && color == "yellow") {
try {
t.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
// e.printStackTrace();
}
if (!pause.get() && color == "yellow") {
super.setIcon(redLight);
color = "red";
isRed.set(true);
} else {
continue;
}
}
}
Thread.yield();
}
}
// turn off method
public void turnOff() {
running.set(false);
color = "green";
isRed.set(false);
super.setVisible(false);
}
// turn on method
public void turnOn() {
color = "red";
isRed.set(true);
running.set(true);
super.setVisible(true);
super.setIcon(redLight);
}
// getter
public String getColor() {
return color;
}
// pause
public void pause() {
running.set(false);
pause.set(true);
}
// play
public void play() {
running.set(true);
pause.set(false);
}
}