本文整理匯總了Java中java.util.concurrent.ConcurrentSkipListMap.putIfAbsent方法的典型用法代碼示例。如果您正苦於以下問題：Java ConcurrentSkipListMap.putIfAbsent方法的具體用法？Java ConcurrentSkipListMap.putIfAbsent怎麽用？Java ConcurrentSkipListMap.putIfAbsent使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類java.util.concurrent.ConcurrentSkipListMap的用法示例。
在下文中一共展示了ConcurrentSkipListMap.putIfAbsent方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: testPutIfAbsent1_NullPointerException
import java.util.concurrent.ConcurrentSkipListMap; //導入方法依賴的package包/類
/**
* putIfAbsent(null, x) throws NPE
*/
public void testPutIfAbsent1_NullPointerException() {
ConcurrentSkipListMap c = map5();
try {
c.putIfAbsent(null, "whatever");
shouldThrow();
} catch (NullPointerException success) {}
}
示例2: testPutIfAbsent
import java.util.concurrent.ConcurrentSkipListMap; //導入方法依賴的package包/類
/**
* putIfAbsent works when the given key is not present
*/
public void testPutIfAbsent() {
ConcurrentSkipListMap map = map5();
map.putIfAbsent(six, "Z");
assertTrue(map.containsKey(six));
}