import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
+import java.util.Set;
import java.util.Vector;
/**
return null;
}
+ public T get(String key1, String key2) {
+ Map<String, T> innerMap = this.map.get(key1);
+ if (innerMap == null) {
+ return null;
+ }
+ return innerMap.get(key2);
+ }
+
public Collection<T> get(String key) {
Map<String, T> innerMap = this.map.get(key);
if (innerMap == null) {
return new Vector<>(innerMap.values());
}
+ public Set<String> keySet() {
+ return this.map.keySet();
+ }
+
public void clear() {
this.map.clear();
}