本文整理匯總了Java中java.util.IdentityHashMap.entrySet方法的典型用法代碼示例。如果您正苦於以下問題：Java IdentityHashMap.entrySet方法的具體用法？Java IdentityHashMap.entrySet怎麽用？Java IdentityHashMap.entrySet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.IdentityHashMap的用法示例。
在下文中一共展示了IdentityHashMap.entrySet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: writeIdentityHashMap
import java.util.IdentityHashMap; //導入方法依賴的package包/類
/**
* Writes a <code>IdentityHashMap</code> to a <code>DataOutput</code>. Note that even though
* <code>map</code> may be an instance of a subclass of <code>IdentityHashMap</code>,
* <code>readIdentityHashMap</code> will always return an instance of
* <code>IdentityHashMap</code>, <B>not</B> an instance of the subclass. To preserve the class
* type of <code>map</code>, {@link #writeObject(Object, DataOutput)} should be used for data
* serialization.
*
* @throws IOException A problem occurs while writing to <code>out</code>
*
* @see #readIdentityHashMap
*/
public static void writeIdentityHashMap(IdentityHashMap<?, ?> map, DataOutput out)
throws IOException {
InternalDataSerializer.checkOut(out);
int size;
if (map == null) {
size = -1;
} else {
size = map.size();
}
InternalDataSerializer.writeArrayLength(size, out);
if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
logger.trace(LogMarker.SERIALIZER, "Writing IdentityHashMap with {} elements: {}", size, map);
}
if (size > 0) {
for (Map.Entry<?, ?> entry : map.entrySet()) {
writeObject(entry.getKey(), out);
writeObject(entry.getValue(), out);
}
}
}
示例2: main
import java.util.IdentityHashMap; //導入方法依賴的package包/類
public static void main(String[] args) throws Exception {
final IdentityHashMap<String, String> identityHashMap =
new IdentityHashMap<>();
identityHashMap.put("One", "Un");
identityHashMap.put("Two", "Deux");
identityHashMap.put("Three", "Trois");
Set<Map.Entry<String, String>> entrySet = identityHashMap.entrySet();
HashSet<Map.Entry<String, String>> hashSet = new HashSet<>(entrySet);
// NB: These comparisons are valid in this case because none of the
// keys put into 'identityHashMap' above are equal to any other.
if (false == hashSet.equals(entrySet)) {
throw new RuntimeException("Test FAILED: Sets are not equal.");
}
if (hashSet.hashCode() != entrySet.hashCode()) {
throw new RuntimeException("Test FAILED: Set's hashcodes are not equal.");
}
}