Java 8 : Iterate Map And Add To List
Here I will show you how to iterate Map in Java 8 and add element to List. I came across a situation where I required to fetch data…
foreach
Posts tagged foreach
Java 8: iterate over Map of List of Objects
In this example I am going to show you how to iterate over map of list of objects. Let’s say you have keys as strings and values as…
WeakHashMap in Java
What is WeakHashMap WeakHashMap is based on Hash table implementation of the Map interface but with weak keys. An entry in a WeakHashMap will automatically be removed when…
LinkedHashMap in Java
What is LinkedHashMap A LinkedHashMap like HashMap is a simple yet powerful way to store and get data. Unlike HashMap, LinkedHashMap is based on HashTable and Linked list…
HashMap in Java
What is HashMap A HashMap is a simple yet powerful way to store and get data. HashMap is based on HashTable implementation, that implements the Map interface and…
ConcurrentHashMap in Java
Though we have thread-safe collections classes like HashTable, Synchronized Map, which can be used in multi-threaded environment but there are significant differences between them, which arise from the…
Java forEach Example Using Lambda Expression
Introduction This tutorial will show you how to use Java 8 forEach() loop to iterate Collection using Lambda Expression. Prior to Java 8 or JDK 8, the for…