Here are the solutions to the competitive programming language. All HackerRank Java Programming Solutions in Single Post, Directly copy-paste these codes into the HackerRank terminal and you are good to go.
One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions.

HackerRank Java Programming Solutions
In this lesson, we are going to cover all the Hackerrank Solutions Java. Here is the list.
HackerRank Java Introduction
- Welcome to Java!
- Java Stdin and Stdout I
- Java If Else
- Java Stdin and Stdout II
- Java Output Formatting
- Java loops I
- Java loops II
- Java Static Initializer Block
- Java Date and Time
- Java Currency Formatting
HackerRank Java Strings
- Java String Introduction
- Java Substring
- Java Substring Comparison
- Java String Reverse
- Java Anagrams
- Java String Tokens
- Java Regex
- Java Regex 2
- Valid username Regular Expression
HackerRank Java – Big Number
HackerRank Java Data Structure
- Java 1D Array
- Java 2D Array
- Java Subarray
- Java Arraylist
- Java 1D Array(part 2)
- Java List
- Java Map
- Java Stack
- Java Hashset
- Java Generics
- Java Comparator
- Java Sort
- Java Dequeue
- Java BitSet
- Java Priority Queue
HackerRank Java Object-Oriented Programming
HackerRank Java Exception Handling
HackerRank Java Advanced
- Java Varargs Simple Addition
- Java Reflection Attribute
- Can you Access?
- Prime Checker
- Java Factory Pattern
- Java Singleton Pattern
- Java Visitor Patterns
- Java Annotations
- Covariant Return Types
- Java Lambda Expression
- Java MD5
- Java SHA-256
Disclaimer: The above Problem HackerRank Solutions in Java are generated by Hackerrank but the Solution is Provided by Chase2Learn.
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