Helper Counter

Jan Burse, created Aug 17. 2019
package jekpro.frequent.basic;
import java.util.concurrent.atomic.AtomicInteger;
* <p>This class provides an atomic integer counter.</p>
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public final class Counter {
private final AtomicInteger counter = new AtomicInteger();
* <p>Increment this counter and return the old value.</p>
* @return The old value.
public int next() {
AtomicInteger atomic = counter;
int oldcount;
do {
oldcount = atomic.get();
} while (!atomic.compareAndSet(oldcount, oldcount + 1));
return oldcount;