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…
Map
Posts tagged Map
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…
Spring NamedParameterJdbcTemplate And Collections.singletonMap Example
NamedParameterJdbcTemplate and Collections.singletonMap In this post I will show you how to use NamedParameterJdbcTemplate and Collections.singletonMap to execute query for returning result. The NamedParameterJdbcTemplate class adds support for…
Spring NamedParameterJdbcTemplate and MapSqlParameterSource Example
Introduction In this post I will show you how to use NamedParameterJdbcTemplate and MapSqlParameterSource to execute query for inserting or retrieving results from database table. The NamedParameterJdbcTemplate class…
Cucumber Data Table – Convert a Three Column Table to a List
Introduction Here in this post you will see an example on Cucumber data table – convert a three column table to a list. Cucumber is a tool for…
Cucumber Data Table – Convert a Two Column Table to a Map
Introduction In this post you will see an example on cucumber data table – convert a two column table to a Map. Cucumber is a tool for running…
REST Service with MultivaluedMap using Jersey
Introduction Here I am going to give an example on how MultivaluedMap in REST web service works. A MultivaluedMap<K, V> is a map of key-values pairs. Each key…
How HashMap Works In Java
Introduction HashMap (also known as HashTable) is, a data structure that can map keys to values, used to implement an associative array. A HashMap uses a hash function…