core-java

1. Collection in java

   1. List

      1. ArrayList
      2. LinkedList
      3. ArrayList Vs LinkedList Vs Vector

   2. Queue

      1. ArrayBlockingQueue
      2. ConcurrentLinkedQueue
      3. LinkedBlockingQueue
      4. LinkedTransferQueue
      5. PriorityBlockingQueue

   3. Deque

      1. ArrayDeque
      2. ConcurrentLinkedDeque
      3. LinkedBlockingDeque

   4. Set

      1. EnumSet
      2. HashSet
      3. TreeSet
      4. LinkedHashSet

   5. Vector

   6. Stack

   7. HashTable

   8. Map

      1. HashMap
      2. TreeMap
      3. LinkedHashMap
      4. HashMap_LinkedHashMap_TreeMap

2. OOP concepts

   1. Classes and Objects
   2. Encapsulation
   3. Inheritance
   4. Abstraction
   5. Polymorphism

3. JAVA 7 Feature

4. JAVA 8 Feature

5. JAVA 9 Feature

6. Keywords in java

7. Type Casting in java

8. Multithreading

   1. Life Cycle of thread

9.String

1. String in java
2. StringBuffer
3. StringBuilder
4. StringTokenizer
5. String vs StringBuilder vs StringBuffer

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DataStructures

Data Structure

1. Arrays

   1. One Dimensional array
   2. Multidimensional Array
   3. Jagged Array

2. LinkedList

   1. SingleLinkedList

3. Tree

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Algorithms

Algorithm

1. Recursion
2. Seaching Algo
   1. Linear Search
   2. Binary Search
3. Sorting Algorithm
   1. Bubble Sort

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Design Pattern

Design Pattern

SOLID Principles

SOLID Principles

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Problems

Array

1. Reverse the Array

2. Find the maximum and minimum element in an array

3. Find the "Kth" max and min element of an array

4. Given an array which consists of only 0, 1 and 2. Sort the array without using any sorting algo

5. Move all the negative elements to one side of the array

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Mixed

1. Factorial of number

2. Count No. of Digits in Factorial

3. Program for Fibonacci numbers

4. String

   1. Reverse Given String using Recursion

   2. print all combination can be formed replacing wild card symbol

   3. Pruducer and Consumer Problem