https://github.com/rahul-ghadge/demoprogramsjava
Core java, Collection, Multi threading, Data Structure, Generics, Java8 features, Streams, Functional Interfaces, Reflection, Recursion, Comparator related interview programs
https://github.com/rahul-ghadge/demoprogramsjava
collections core-java data-structures generics java8 multithreading
Last synced: 2 months ago
JSON representation
Core java, Collection, Multi threading, Data Structure, Generics, Java8 features, Streams, Functional Interfaces, Reflection, Recursion, Comparator related interview programs
- Host: GitHub
- URL: https://github.com/rahul-ghadge/demoprogramsjava
- Owner: rahul-ghadge
- Created: 2019-08-21T13:50:13.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2022-06-20T08:20:37.000Z (about 3 years ago)
- Last Synced: 2025-04-01T15:09:59.222Z (3 months ago)
- Topics: collections, core-java, data-structures, generics, java8, multithreading
- Language: Java
- Homepage:
- Size: 309 KB
- Stars: 16
- Watchers: 1
- Forks: 12
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# DemoPrograms
In this repository all Core Java related programs are added, which are mostly tricky one.
Topics: Core java, Collection, Multi threading, Data Structure, Generics, Java8 features, Streams, Functional Interfaces, Reflection, Recursion, Comparator related interview programs.
Here all related codes are places in respective packages listed below.
## Topics Covered per package
- [API call](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/api)
- [Rest API consumer](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/api/RestConsumer.java)
- [Whitelist api endpoints](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/api/WhiteListAPIs.java)
- [Combination](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/combination)
- [Array of Combination (Number)](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/combination/NumArrayCombination.java)
- [String Combination](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/combination/StringCombinations.java)
- [Comparator](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/comparatr)
- [Comparator Demo](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/comparatr/ComparatorDemo.java)
- [Comparator on Multiple Fields (Java 7)](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/comparatr/ComparatorOnMultipleFields_Java7.java)
- [Comparator on Multiple Fields (Java 8)](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/comparatr/ComparatorOnMultipleFields_Java8.java)
- [HashMap Sorting](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/comparatr/HashMapSorting.java)
- [TreeMap reverse operations](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/comparatr/TreeMapReverseOperations.java)
- [Conversions](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/conversions/BinaryDecimalConversions.java)
- [Copy](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/copy)
- [Deep Copy](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/copy/DeepCopy.java)
- [Deep Copy using CLone method](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/copy/DeepCopyUsingClone.java)
- [Shallow Copy](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/copy/ShalowCopy.java)
- [Data Structure](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure)
- [Searching](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/searching)
- [BFS (Breath First Search) Graph](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/searching/BFSGraph.java)
- [BFS (Breath First Search) Shortest Path Graph](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/searching/BFSShortestPath.java)
- [DFS (Depth First Search) Graph](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/searching/DFSGraph.java)
- [Sorting](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/sorting)
- [Bubble Sort](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/sorting/MyBubbleSort.java)
- [Insertion Sort](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/sorting/MyInsertionSort.java)
- [Selection Sort](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/sorting/MySelectionSort.java)
- [Binary Tree Depth](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/BinaryTreeDepth.java)
- [Detect Loop in Linked List](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/DetectLoopInLinkedList.java)
- [Detect and Remove Loop in Linked List](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/datastructure/LoopInLinkedList.java)
- [LRU (Last Recently Used) Cache](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/LRUCache.java)
- [Find Value in Binary Tree](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/datastructure/ValueInBinaryTree.java)
- [Elevator program](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/elevator)
- [Finally Block](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/finaly/FinallyBlock.java)
- [Generics](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/generics)
- [Lower Bounded Wildcards](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/generics/LowerBoundedWildcards.java)
- [Unbounded Wildcards](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/generics/UnboundedWildcards.java)
- [Upper Bounded Wildcards](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/generics/UpperBoundedWildcards.java)
- [Hash and Equals](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/hashequals)
- [Image Compression](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/img/compress)
- [Immutable](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/immutable/FinalClassExample.java)
- [Interface - Functional Interface](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/intrface)
- [Java 8 Features](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/java8)
- [Design pattern using java8](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/java8/design/pattern)
- [Builder Design pattern using java8](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/java8/design/pattern/GenericBuilderDemo.java)
- [Functional Interfaces](https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html)
- [BiConsumer](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/BiConsumerDemo.java)
- [BiFunction](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/BiFunctionDemo.java)
- [BiPredicate](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/BiPredicateDemo.java)
- [Collectors utility class](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/CollectorsDemo.java)
- [Comparator](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/ComparatorDemo.java)
- [Consumer](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/ConsumerDemo.java)
- [Custom Functional Interface with default & static methods](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/FunctionalInterfaceImplementation.java)
- [Functions](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/FunctionDemo.java)
- [Map Reduce](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/MapReduce.java)
- [Method Reference](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/MethodReferenceDemo.java)
- [Optionals](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/OptionalDemo.java)
- [Predicates](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/PredicateDemo.java)
- [Sequential and Parallel Streams](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/SequentialParallelDemo.java)
- [Streams](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/StreamDemo.java)
- [Suppliers](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/java8/SupplierDemo.java)
- [List Operations](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/list/operations)
- [Find Missing Elements from Duplicate List](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/list/operations/FindMissingElementFromDuplicateList.java)
- [Remove Duplicate Elements from List](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/list/operations/RemoveDuplicateFromList.java)
- [Map Operations](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/map/operations)
- [Count Chars and Print in Order as per Count](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/map/operations/CountCharsAndPrintInOrder.java)
- [Iterate Maps using Java 7 and Java 8](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/map/operations/MapIterations.java)
- [Max Repetitive Letter from String](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/map/operations/MaxRepeatativeLetter.java)
- [Method Calls](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/methodcalls)
- [Method Calls on Overloaded Classes with Extending](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/methodcalls/ExtendClass.java)
- [Integer wrapper and primitive method calls](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/methodcalls/IntegerTest.java)
- [Static method calls by Extending](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/methodcalls/StaticMethodOverload.java)
- [Numbers Operations](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/numbers)
- [N Prime Numbers](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/numbers/NPrimeNumber.java)
- [Sum of Numbers](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/numbers/SumOfNumbers.java)
- [Overriding](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/overriding)
- [Overriding methods](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/overriding/MethodCallTest.java)
- [Overriding Rules while Extending Classes](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/overriding/SuperClass.java)
- [Palindrome](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/palindrome)
- [Array of Numbers Palindrome](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/palindrome/ArrayPalindrome.java)
- [String Palindrome with Multiple Techniques](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/palindrome/Palindrome.java)
- [Pattern programs](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/pattern)
- [Christmas Tree using Stars (*)](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/pattern/ChristmasTree.java)
- [Permutation](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/permutation)
- [Permutation using Recursion and Swapping](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/permutation/Permutation.java)
- [Permutation using Substring](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/permutation/PermutationUsingSubString.java)
- [Recursion](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reccursion)
- [Biggest in Array](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reccursion/BiggestInArray.java)
- [Factorial](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reccursion/FactorialRecursive.java)
- [Fibonacci Series](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reccursion/FibonacciInRecursion.java)
- [Reverse String](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reccursion/ReverseString.java)
- [Reflection](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reflection)
- [Get Class's Public and Private Fields](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reflection/GetClassFields.java)
- [Get Class Information](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reflection/GetClassInfo.java)
- [Get Class's Public and Private Methods](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/reflection/GetClassMethods.java)
- [Runtime Package](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/runtime)
- [Garbage Collection](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/runtime/GarbageCollectionDemo.java)
- [Log Monitor](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/runtime/LogMonitor.java)
- [Run Commands using Java](https://github.com/rahul-ghadge/DemoProgramsJava/blob/master/src/main/java/com/demo/program/runtime/RuntimeExe.java)
- [Singleton Prevention](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/singleton)
- [Restrict Singleton from Cloning](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/singleton/RestrictCloneInSingleton.java)
- [Restrict Singleton from Reflection](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/singleton/RestrictReflectionInSingleton.java)
- [Restrict Singleton from Serialization](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/singleton/RestrictSerializationInSingleton.java)
- Store SQL
- [Run SQL Script on Oracle DB](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/store/sql)
- [Multi-threading](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread)
- [Blocking Queue](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/BlockingQueueDemo.java)
- [Countdown Latch](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/CountdownLatchDemo.java)
- [Cyclic Barrier ](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/CyclicBarrierDemo.java)
- [Hello World Printing(100 times) from 2 Different Threads](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/HelloWorldPrint.java)
- [Java Atomic Integer](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/JavaAtomic.java)
- [Join in Thread](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/JoinTest.java)
- [Hello World Printing from 2 Different Threads](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/MainHelloWorldThread.java.java)
- [Producer and Consumer using Synchronized Blocks](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/ProducerConsumer.java)
- [Producer and Consumer using Locks](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/ProducerConsumerLock.java)
- [Return/Get Value from Thread](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/ReturnValue.java)
- [Return/Get Value from Thread using Callable Interface](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/ReturnValueFromCollable.java)
- [Sum of Numbers Range using Executor Framework](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/RunnableSumOfRange.java)
- [Synchronized method test](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/SynchronizedTest.java)
- [Thread Groups](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/ThreadGroupDemo.java)
- [Wait and Notify](https://github.com/rahul-ghadge/DemoProgramsJava/tree/master/src/main/java/com/demo/program/thread/WaitNotifyTest.java)
#### More topics coming soon.