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86 lines (72 loc) · 2.51 KB
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package java_code.thread;
public class RamenProgram {
public static void main(String[] args) {
try {
RamenCook ramenCook = new RamenCook(Integer.parseInt("50"));
new Thread(ramenCook, "A").start();
new Thread(ramenCook, "B").start();
new Thread(ramenCook, "C").start();
new Thread(ramenCook, "D").start();
} catch (Exception e) {
e.printStackTrace();
}
}
}
class RamenCook implements Runnable {
private int ramenCount;
private String[] burners = {"_", "_", "_", "_"};
public RamenCook(int count) {
this.ramenCount = count;
}
@Override
public void run() {
while (ramenCount > 0) {
synchronized (this) {
ramenCount--;
System.out.println(
Thread.currentThread().getName()
+ ": " + ramenCount + "개 남음"
);
}
for (int i = 0; i < burners.length; i++) {
if (!burners[i].equals("_")) continue;
synchronized (this) {
burners[i] = Thread.currentThread().getName();
System.out.println(
" "
+ Thread.currentThread().getName()
+ ": [" + (i + 1) + "]번 버너 ON"
);
showBurners();
}
try {
Thread.sleep(2000);
} catch (Exception e) {
e.printStackTrace();
}
synchronized (this) {
burners[i] = "_";
System.out.println(
" "
+ Thread.currentThread().getName()
+ ": [" + (i + 1) + "]번 버너 OFF"
);
showBurners();
}
break;
}
try {
Thread.sleep(Math.round(1000 * Math.random()));
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void showBurners() {
StringBuilder stringToPrint = new StringBuilder(" ");
for (String burner : burners) {
stringToPrint.append(" ").append(burner);
}
System.out.println(stringToPrint.toString());
}
}