Basic Practice Programming Question in C and core Java
Program to Add Two Binary Strings
program to Add Two Complex numbers
Program to Find GCD of two Numbers
Program to Print the ASCII values
Program to Find LCM of two Numbers
Program to Calculate Simple Interest
Program to Find the Area of a Circle
Program to Find Factorial of a number
Program to Calculate Compound Interest
Program to Compute Quotient and Remainder
Program to Find the Perimeter of a Rectangle
Program to Multiply two Floating Point Numbers
Program to Read The Number From Standard Input
Program to Multiply Two Floating-Point Numbers
Program to Find the Largest Among Three Numbers
Program to Display Alphabets (A to Z) using loop
Program to Display All Prime Numbers from 1 to N
Program to Check Armstrong Number between Two Integers
Program to Check whether the input number is a Neon Number
Program to Find Even Sum of Fibonacci Series Till number N
Program to Find all Roots of a Quadratic Equation
Program to Calculate the Sum of Natural Numbers
Program to Count the Number of Vowels and Consonants in a Sentence
Program to Sort Elements in Lexicographical Order (Dictionary Order)
Program to Calculate simple interest and compound interest
Program to Implement multiple inheritance
Program to Determine the name and version of the operating system
Program to Check if two of three boolean variables are true
Program to Check the birthday and print Happy Birthday message
Program to Round a Number to n Decimal Places
Program to Generate Multiplication Table
Program to Print the Multiplication Table in Triangular Form
Program to Display Fibonacci Series
Program to Count Number of Digits in an Integer
Program to Calculate the Power of a Number
Program to Find Area of Square
Program To Find The Area of a Trapezium
Program to Find the Perimeter of a Circle
Program to Find the Surface area and Volume of Cuboid
Program To Perform nCr (r-combinations)
Program to Find the Area of a Parallelogram
Program to Display Prime Numbers Between Two Intervals
Program to Display Armstrong Number Between Two Intervals
Program to Display Prime Numbers Between Intervals Using Function
Program to Display Armstrong Numbers Between Intervals Using Function
Program to Display Factors of a Number
Program to Make a Simple Calculator Using switch...case
Program to Check Whether a Number can be Expressed as Sum of Two Prime Numbers
Program to Find the Sum of Natural Numbers using Recursion
Program to Find Factorial of a Number Using Recursion
Program to Find G.C.D Using Recursion
Program to Reverse a Sentence Using Recursion
Program to calculate the power using recursion
Program to Call One Constructor from another
Program to implement private constructors
Program to pass lambda expression as a method argument
Program to pass method call as arguments to another method
Program to Calculate the Execution Time of Methods
Program to Find Sum of Digits of a Number using Recursion
Program to Find the Product of Two Numbers Using Recursion
Program to Find Sum of N Numbers Using Recursion
Program to Check Whether a Number is Even or Odd
Program to Check Whether a Number is Positive or Negative
Program to Check Whether a Character is Alphabet or Not
Program to Check if An Array Contains a Given Value
Program to Check Armstrong Number
Program to Check if a String is Numeric
Program to Check if two strings are anagram
Program to Check Whether an Alphabet is Vowel or Consonant
Program to Check Whether a Number is Prime or Not
Program To Find The Perfect Number
Program to Print Right Triangle Star Pattern
Program to Print Left Triangle Star Pattern
Program to Print Pyramid Star Pattern
Program to Print Reverse Pyramid Star Pattern
Program to Print Upper Star Triangle Pattern
Program to Print Mirror Upper Star Triangle Pattern
Program to Print Downward Triangle Star Pattern
Program to Print Mirror Lower Star Triangle Pattern
Program to Print Star Pascal’s Triangle
Program to Print Diamond Star Pattern
Program to Print Square Star Pattern
Program to Print Pyramid Star Pattern
Program to Print Spiral Pattern of Numbers
Program to Create Pyramid and Pattern
Program to Print 8 Star Pattern
Program to Print Inverted Star Pattern
Program to Print Hollow Right Triangle Star Pattern
Program to Print Half Diamond Star Pattern
Program to Print X Star Pattern
Program to convert Decimal to Octal
Program to convert Hexadecimal to Decimal
Program to convert Decimal to Hexadecimal
Program to convert Decimal to Binary
Program to convert Binary to Decimal
Program to convert Boolean to String
Program to convert Binary to Octal
Program to convert char type variables to int
Program to convert int type variables to char
Program to convert long type variables into int
Program to convert int type variables to long
Program to convert boolean variables into string
Program to convert string type variables into boolean
Program to convert string type variables into int
Program to convert int type variables to String
Program to convert int type variables to double
Program to convert double type variables to int
Program to convert string variables to double
Program to convert double type variables to string
Program to convert primitive types to objects
Program to Convert a Stack Trace to a String
Program to Convert File to byte array
Program to Convert InputStream to String
Program to Convert OutputStream to String
Program to Convert Map (HashMap) to List
Program to Convert Array to Set (HashSet)
Program to Convert Byte Array to Hexadecimal
Program to Convert the ArrayList to an array
Program to Convert Character to String
Program to Convert the InputStream into Byte Array
Program to Convert Linked list to an Array
Program to Convert Vector to a List
Program to Convert String to a List of Characters
Program to Convert Iterator to a List
Program to Convert List to a Map
Program to Convert List to a Stream
Program to Convert List to Set
Program to Convert InputStream to String
Program to Convert Set of String to Array of String
Program to Convert String to Object
Program to Convert string value to byte value
6. Classes and Object Programs
Program to Create a Class and Object
Program to Create Abstract Class
Program to Create Singleton Class
Program to Create an Interface
Program to Sow Encapsulation in Class
Program to Show Inheritance in Class
Program to Show Abstraction in Class
Program to Show Data Hiding in Class
Program to Show Polymorphism in Class
Program to Show Overloading of Methods in Class
Program to Show Overriding of Methods in Classes
Program to Show Use of Super Keyword in Class
Program to Show Use of This Keyword in Class
Program to Show Usage of Static keyword in Class
Program to Show Usage of Access Modifier
Program to Add Two Complex Numbers by Passing Class to a Function
Program to Calculate Difference Between Two Time Periods
Program to Determine the class of an object
Program to Create an enum class
Program to Print object of a class
Program to Create custom exception
Program to Create an Immutable Class
Program to Access private members of a class
Program to Show Usage of Main() method
Program to Show Use of Static and Non-static Methods
Program to Show Usage of forEach() Method
Program to Show Usage of toString() Method
Program to Show Usage of codePointAt() Method
Program to Show Usage of compare() Method
Program to Show Usage of equals() Method
Program to Show Usage of hasNext() and next() Method
Program to Implement Linear Search Algorithm
Program to Implement Binary Search Algorithm
Program to Implement Bubble Sort algorithm
Program to Implement Quick Sort Algorithm
Program to Implement Merge Sort Algorithm
Program to Implement Binary Search Algorithm
Program to Concatenate Two Arrays
Program to Search an Element in an Array
Program to Find the Largest Element in an Array
Program to Sort the Elements of an Array in Descending Order
Program to Sort the Elements of an Array in Ascending Order
Program to Remove Duplicate Elements From an Array
Program to Check if Two Arrays Are Equal or Not
Program to Remove All Occurrences of an Element in an Array
Program to Find Common Array Elements
Program to Copy All the Elements of One Array to Another Array
Program to Sort the 2D Array Across Columns
Program to Check Whether Two Matrices Are Equal or Not
Program to Find the Determinant
Program to Find the Normal and Trace
Program to Calculate Average Using Arrays
Program to Find Largest Element of an Array
Program to Calculate Standard Deviation
Program to Print Boundary Elements of a Matrix
Program to Rotate Matrix Elements
Program to Compute the Sum of Diagonals of a Matrix
Program to Interchange Elements of First and Last in a Matrix Across Rows
Program to Interchange Elements of First and Last in a Matrix Across Columns
Program to Interchange the Diagonals
Program to Add Two Matrix Using Multi-dimensional Arrays
Program to Multiply to Matrix Using Multi-dimensional Arrays
Program To Find the Trace and Normal of a given Matrix
Program to Multiply two Matrices by Passing Matrix to a Function
Program to Find Transpose of a Matrix
Program to Recursively Linearly Search an Element in an Array
Program to display upper triangular matrix
Program To Determine If a Given Matrix is a Sparse Matrix
Program to Get a Character From the Given String
Program to Replace a Character at a Specific Index
Program to Reverse a String Using Stacks
Program to Swapping Pair of Characters
Program to Check Whether the Given String is Pangram
Program to Print first letter of each word using regex
Program to Determine the Unicode Code Point at a given index
Program to Remove leading zeros
Program to Compare two strings
Program to Compare two strings lexicographically
Program to Print even length words
Program to Insert a string into another string
Program to Splitting into a number of sub-strings
Program to Compute all the permutations of the string
Program to Create random strings
Program to Clear the StringBuffer
Program to Capitalize the first character of each word in a String
Program to Iterate through each characters of the string.
Program to Differentiate String == operator and equals() method
Program to Implement switch statement on strings
Program to Lookup enum by String value
Program to Compare Two Strings
Program to Convert a String into the InputStream
Program to Check if a string contains a substring
Program to Find the Frequency of Character in a String
Program to Remove All Whitespaces from a String
Program to Check if a String is Empty or Null
Program to Check if a string is a valid shuffle of two distinct strings
Program to Find the Duplicate Characters in a String
Program to Replace the Spaces of a String with a Specific Character
Program to divide a string in 'N' equal parts
Program To Find all the Subsets of a String
Program to Initializing a List
Program to Find a Sublist in a List
Program to Get Minimum and Maximum From a List
Program to Split a list into Two Halves
Program to Remove a Sublist from a List
Program to Remove Duplicates from an Array List
Program to Remove Null from a List container
Program to Sort Array list in an Ascending Order
Program to Get First and Last Elements from an Array List
Program to Convert a List of String to Comma Separated String
Program to Add Element at First and Last Position of a Linked list
Program to Find Common Elements in Two ArrayList
Program to Remove Repeated Element From An ArrayList
Program to Remove elements from the LinkedList.
Program to Add elements to a LinkedList
Program to Access elements from a LinkedList.
Program to Use Different Types of a Collection
Program to Compare Elements in a Collection
Program to Get the Size of the Collection
Program to Compare Elements in a Collection
Program to Shuffle the Elements of a Collection
Program to Reverse a Collection
Program to Convert Collection into Array
Program to Convert Array into Collection
Program to Replace Elements in a List
Program to Rotate Elements of a List
Program to Iterate through Elements of HashMap
Program to Sort a Map By Values
Program to Sort ArrayList of Custom Objects By Property
Program to Implement LinkedList
Program to Implement stack data structure
Program to Implement the queue data structure
Program to Get the middle element of LinkedList in a single iteration
Program to Convert the LinkedList into an Array and vice versa
Program to Convert the ArrayList into a string and vice versa
Program to Iterate over an ArrayList
Program to Iterate over a HashMap
Program to Update value of HashMap using key
Program to Remove duplicate elements from ArrayList
Program to Get key from HashMap using the value
Program to Detect loop in a LinkedList
Program to Calculate union of two sets
Program to Calculate the intersection of two sets
Program to Calculate the difference between two sets
Program to Check if a set is the subset of another set
Program to Pass ArrayList as the function argument
Program to Iterate over ArrayList using Lambda Expression
Program to Implement Binary Tree Data Structure
Program to Perform the preorder tree traversal
Program to Perform the postorder tree traversal
Program to Perform the inorder tree traversal
Program to Implement the graph data structure
Program to Count number of leaf nodes in a tree
Program to detect a Loop in a Linked List
Program to Format time in AM-PM format
Program to Display Dates of Calendar Year in Different Format
Program to Display current Date and Time
Program to Display time in different country’s format
Program to Convert the local Time to GMT
Program to Convert String to Date
Program to Convert Milliseconds to Minutes and Seconds
Program to Create a temporary file
Program to Rename a file in java
Program to Make a File Read-Only
Program to Compare Paths of Two files
Program to Copy one file into another file
Program to Print all the Pattern that Matches Given Pattern From a File
Program to Append a String in an Existing File
Program to Read content from one file and writing it into another file
Program to Read and printing all files from a zip file
Program to Get Current Working Directory
Program to Create String from Contents of a File
Program to Append Text to an Existing File
Program to Get all Files Present in a Directory
Program to Load File as InputStream
Program to Create File and Write to the File
Program to Read the Content of a File Line by Line
Program to Delete File in Java
Program to Delete Empty and Non-empty Directory
Program to Get the File Extension
Program to Get the name of the file from the absolute path
Program to Get the relative path from two absolute paths
Program to Count number of lines present in the file
Program to check if a file is directory or a file
Program to Traverse in a directory
Program to Get the size of a directory
Program to Create directories recursively
Program to Search for a file in a directory
Program to Find the current working directory
Program to Display all the directories in a directory
15. Exceptions and Errors Programs
Program to Show Runtime exceptions
Program to Show Types of errors
Program to Handle the Exception Hierarchies
Program to Handle the Exception Methods
program to Handle the Checked exceptions
Program to Handle the Unchecked Exceptions
Program to Handle Divide By Zero and Multiple Exceptions
Program to Show Unreachable Code Error
Program to Show Thread interface and memory consistency errors
Program to Check the Thread Status
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