本文整理汇总了Java中java.util.concurrent.ConcurrentNavigableMap.putIfAbsent方法的典型用法代码示例。如果您正苦于以下问题：Java ConcurrentNavigableMap.putIfAbsent方法的具体用法？Java ConcurrentNavigableMap.putIfAbsent怎么用？Java ConcurrentNavigableMap.putIfAbsent使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.util.concurrent.ConcurrentNavigableMap的用法示例。
在下文中一共展示了ConcurrentNavigableMap.putIfAbsent方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testPutIfAbsent1_NullPointerException
import java.util.concurrent.ConcurrentNavigableMap; //导入方法依赖的package包/类
/**
* putIfAbsent(null, x) throws NPE
*/
public void testPutIfAbsent1_NullPointerException() {
try {
ConcurrentNavigableMap c = map5();
c.putIfAbsent(null, "whatever");
shouldThrow();
} catch (NullPointerException success) {}
}
示例2: testDescendingPutIfAbsent1_NullPointerException
import java.util.concurrent.ConcurrentNavigableMap; //导入方法依赖的package包/类
/**
* putIfAbsent(null, x) throws NPE
*/
public void testDescendingPutIfAbsent1_NullPointerException() {
try {
ConcurrentNavigableMap c = dmap5();
c.putIfAbsent(null, "whatever");
shouldThrow();
} catch (NullPointerException success) {}
}
示例3: testPutIfAbsent
import java.util.concurrent.ConcurrentNavigableMap; //导入方法依赖的package包/类
/**
* putIfAbsent works when the given key is not present
*/
public void testPutIfAbsent() {
ConcurrentNavigableMap map = map5();
map.putIfAbsent(six, "Z");
assertTrue(map.containsKey(six));
}
示例4: testDescendingPutIfAbsent
import java.util.concurrent.ConcurrentNavigableMap; //导入方法依赖的package包/类
/**
* putIfAbsent works when the given key is not present
*/
public void testDescendingPutIfAbsent() {
ConcurrentNavigableMap map = dmap5();
map.putIfAbsent(six, "Z");
assertTrue(map.containsKey(six));
}