Category: Collection Framework

Listiterator 0

ListIterator in java

In the previous post, we have learnt about the Iterator in java. In this post, we will learn about ListIterator in java. It is different from Iterator , because ListIterator is used to iterate...

Iterator in java 0

Iterator in Java

In the previous post, we have learnt about TreeMap in java. In this post, we will learn about the Iterator in java. Iterator is used for iterating(looping) over collections classes in java like HashMap,...

TreeMap 0

TreeMap in Java

In the previous post, we have learnt about LinkedHashMap. In this post, we will learn about TreeMap in java. It has the following features as given below. It implements the NavigableMap interface and extends...

LInkedHashMap 0

LinkedHashMap in java

In the previous post, we have seen how to remove elements from HashMap. In this post, we will learn about LinkedHashMap in java. LinekdHashMap has the following features. It implements Map and extends HashMap....

Hashmap 0

Sort HashMap by keys and values

In the previous post, we have learnt how to iterate over the HashMap. In this post, we will see how to sort HashMap by keys and values. By default, HashMap does not preserve any...

Itearate Over HashMap 0

Iterate over a HashMap

In this post, we have seen how to add the element to HashMap. In this post, we will see how to iterate over a HashMap. We can iterate over a HashMap by using two ways....

Add to HashMap 0

Add elements to HashMap

In this post, we have seen about HashMap. In this post, we will learn how to add elements to HashMap. We need to use method put to add the values to HashMap. Syntax: HashMap<key,...

HashMap in java 1

HashMap in java

In the Previous post, we have learnt about TreeSet in java. In this post, we will learn HashMap in java. HashMap has the following features. HashMap implements Map Interface and extends AbstratMap class. It...

TreeSet in java 1

TreeSet in Java

In the previous post, we have learnt about LinkedHashSet. In this post, we will learn about TreeSet in java. TreeSet has the following features. Contains unique elements like HashSet. The TreeSet class implements NavigableSet...