2015-04-20 15:36:01 -07:00
|
|
|
//: concurrency/EvenGenerator.java
|
|
|
|
// When threads collide.
|
|
|
|
|
|
|
|
public class EvenGenerator extends IntGenerator {
|
|
|
|
private int currentEvenValue = 0;
|
2015-05-05 11:20:13 -07:00
|
|
|
@Override
|
2015-04-20 15:36:01 -07:00
|
|
|
public int next() {
|
|
|
|
++currentEvenValue; // Danger point here!
|
|
|
|
++currentEvenValue;
|
|
|
|
return currentEvenValue;
|
|
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
|
|
EvenChecker.test(new EvenGenerator());
|
|
|
|
}
|
|
|
|
} /* Output: (Sample)
|
|
|
|
Press Control-C to exit
|
|
|
|
89476993 not even!
|
|
|
|
89476993 not even!
|
|
|
|
*///:~
|