BAEL-2800_Copying_a_HashMap_in_Java - types corrected
@@ -10,45 +10,45 @@ import org.apache.commons.lang3.SerializationUtils;
public class CopyHashMap {
- public static <K, V> HashMap<K, V> copyUsingConstructor(HashMap<K, V> originalMap) {
- return new HashMap<K, V>(originalMap);
+ public static <String, Employee> HashMap<String, Employee> copyUsingConstructor(HashMap<String, Employee> originalMap) {
+ return new HashMap<String, Employee>(originalMap);
}
- public static <K, V> HashMap<K, V> copyUsingClone(HashMap<K, V> originalMap) {
- return (HashMap<K, V>) originalMap.clone();
+ public static <String, Employee> HashMap<String, Employee> copyUsingClone(HashMap<String, Employee> originalMap) {
+ return (HashMap<String, Employee>) originalMap.clone();
}
- public static <K, V> HashMap<K, V> copyUsingPut(HashMap<K, V> originalMap) {
- HashMap<K, V> copyMap = new HashMap<K, V>();
- Set<Entry<K, V>> entries = originalMap.entrySet();
- for(Map.Entry<K, V> mapEntry: entries) {
- copyMap.put((K)mapEntry.getKey(), (V)mapEntry.getValue());
+ public static <String, Employee> HashMap<String, Employee> copyUsingPut(HashMap<String, Employee> originalMap) {
+ HashMap<String, Employee> copyMap = new HashMap<String, Employee>();
+ Set<Entry<String, Employee>> entries = originalMap.entrySet();
+ for(Map.Entry<String, Employee> mapEntry: entries) {
+ copyMap.put(mapEntry.getKey(), mapEntry.getValue());
}
return copyMap;
}
- public static <K, V> HashMap<K, V> copyUsingPutAll(HashMap<K, V> originalMap) {
- HashMap<K, V> copyMap = new HashMap<K, V>();
+ public static <String, Employee> HashMap<String, Employee> copyUsingPutAll(HashMap<String, Employee> originalMap) {
+ HashMap<String, Employee> copyMap = new HashMap<String, Employee>();
copyMap.putAll(originalMap);
return copyMap;
}
- public static <K, V> HashMap<K, V> copyUsingJava8Stream(HashMap<K, V> originalMap) {
- Set<Entry<K, V>> entries = originalMap.entrySet();
- HashMap<K, V> copyMap = (HashMap<K, V>) entries
+ public static <String, Employee> HashMap<String, Employee> copyUsingJava8Stream(HashMap<String, Employee> originalMap) {
+ Set<Entry<String, Employee>> entries = originalMap.entrySet();
+ HashMap<String, Employee> copyMap = (HashMap<String, Employee>) entries
.stream()
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
return copyMap;
}
- public static <K, V> HashMap<K, V> shallowCopy(HashMap<K, V> originalMap) {
- return (HashMap<K, V>) originalMap.clone();
+ public static <String, Employee> HashMap<String, Employee> shallowCopy(HashMap<String, Employee> originalMap) {
+ return (HashMap<String, Employee>) originalMap.clone();
}
- public static <K, V> HashMap<K, V> deepCopy(HashMap<K, V> originalMap) {
+ public static <String, Employee> HashMap<String, Employee> deepCopy(HashMap<String, Employee> originalMap) {
return SerializationUtils.clone(originalMap);
}
