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-rw-r--r--java.html.markdown12
1 files changed, 9 insertions, 3 deletions
diff --git a/java.html.markdown b/java.html.markdown
index dffc3828..478d85d6 100644
--- a/java.html.markdown
+++ b/java.html.markdown
@@ -123,9 +123,15 @@ public class LearnJava {
// Others to check out
// ArrayLists - Like arrays except more functionality is offered,
// and the size is mutable
- // LinkedLists
- // Maps
- // HashMaps
+ // LinkedLists - Implementation of doubly-linked list. All of the
+ // operations perform as could be expected for
+ // a doubly-linked list.
+ // Maps - An objects that maps keys to values. A map cannot contain
+ // duplicate keys; each key can map to at most one value.
+ // HashMaps - This class uses a hashtable to implement the Map interface.
+ // This allows the execution time of basic operations,
+ // such as get and insert element, to remain constant even
+ // for large sets.
///////////////////////////////////////
// Operators