Java » Java HashMap

Java is the popular programming language that originated in 1995. Today, the Java ecosystem includes a very large number of specifications, libraries, frameworks, tools, as well as a thriving community. Take a dive through our collection of Java tutorials that cover a wide array of Java-related topics.

>> Select a Random Key from a HashMap in Java

>> How to Randomly Get a Key, a Value, or an Entry From a HashMap in Java

>> HashMap Implementation to Count the Occurrences of Each Character in Java

>> Difference Between a HashMap and a Dictionary in Java

>> Java Collections and null Values: Tolerance and Restrictions

>> How to Check if All Map Values Are the Same

>> Find the Length of the Largest Subarray With Zero Sum in Java

>> How to Convert Gson JsonArray to HashMap

>> Counting an Occurrence in an Array

>> Create HashMap with Character Count of a String in Java

>> Finding the Majority Element of an Array in Java

>> How to Increment a Map Value in Java

>> How to Sort LinkedHashMap by Values in Java

>> Limiting the Max Size of a HashMap in Java

>> How to Parse XML to HashMap in Java

>> Convert ResultSet Into Map

>> How to Write and Read a File with a Java HashMap

>> How to Write Hashmap to CSV File

>> Split Java String Into Key-Value Pairs

>> Difference Between putIfAbsent() and computeIfAbsent() in Java’s Map