ArrayList get(int index) method is used for fetching an element from the list. We need to specify the index while calling get method and it… [Read More]
Java ArrayList contains() Method example
ArrayList contains() method is used for checking the specified element existence in the given list. public boolean contains(Object element) It returns true if the specified… [Read More]
Java ArrayList addAll(int index, Collection c) Method example
In the last tutorial we have shared the example of addAll(Collection c) method which is used for adding all the elements of Collection c at the… [Read More]
Java ArrayList addAll(Collection c) Method example
In this tutorial we will see the usage of addAll() method of java.util.ArrayList class. This method is used for adding all the elements of a… [Read More]
Java ArrayList add(int index, E element) example
Simple add() method is used for adding an element at the end of the list however there is another variant of add method which is… [Read More]
Java ArrayList add Method with Examples
The add() method of Java ArrayList class is used to add elements to an ArrayList. In this guide, we will see various examples of add… [Read More]
How to loop HashMap in java
In this tutorial we will learn how to loop HashMap using following methods: For loop While loop + Iterator Example: In the below example we… [Read More]
How to serialize HashMap in java
HashMap class is serialized by default which means we need not to implement Serializable interface in order to make it eligible for Serialization. In this… [Read More]
How to sort HashMap in Java by Keys and Values
As we know that HashMap doesn’t preserve any order by default. If there is a need we need to sort it explicitly based on the… [Read More]
How to synchronize HashMap in Java with example
HashMap is a non-synchronized collection class. If we need to perform thread-safe operations on it then we must need to synchronize it explicitly. In this… [Read More]
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