Program to convert String to Float in java (example)
Given an String variable in java, we would like convert String to integer using Integer.parseInt, Integer.valueOf or Integer constructor (with example)
Core Java
Program to convert String to Double in java (example)
Given an String variable in java, we would like convert String to integer using Integer.parseInt, Integer.valueOf or Integer constructor (with example)
Convert String variable to Long in java (example)
Given an String variable in java, we would like convert String to integer using Integer.parseInt, Integer.valueOf or Integer constructor (with example)
A Comprehensive Guide: Exploring the Exciting New Features of Java 17
Introduction: Java 17 introduces groundbreaking features that enhance productivity, code maintainability, and performance. Learn about sealed classes, pattern matching for
Java program to Find Maximum Product of Two Elements in Array
Problem Statement: Given the array of integers. Choose two different indices i and j of that array. Find out product
Java program to add or sum two matrices with example
Given two matrices in Java. Write a program two add matrices. Two matrices can be added only if they have
Java program to find running sum of array
Given one dimensional array in java. Calculate running sum of array. Example to find running sum of array Example 1:
Convert InputStream to String in Java
Given inputStream in Java Convert InputStream to String using InputStreamReader class in java. Methods of InputStreamReader used for inputStream to
Program to sort array of strings – Java 8 Lambda Stream
Given an array of strings in java. We would like to sort an array of strings in alphabetical order using
Program to count & print vowels, consonant in String (java /example)
Given String in java. We would like to count number of vowels & consonants In English there are 26 alphabets
Random number generation – ThreadLocalRandom (concurrency /Java)
What is ThreadLocalRandom? ThreadLocalRandom is used to generate random number typically for multi threading environment. ThreadLocalRandom is particularly useful to
Program to print duplicate characters in String (Java8 /Example)
Given String in java. We would like to print duplicate or repeated characters in a String. Examples: Duplicate or repeated
Program get localhost IPAddress & Hostname in java (example)
Problem Statement? Get IPAddress & Hostname, Canonical name for localhost. InetAddress class provides APIs to retrieve network details for localhost.
Program to convert char to string in java (Character, String class)
Given char value in java. We would like to convert char to string using following methods. toString method of Character
Program to convert String to char & char array in java
Given String value in java. We would like to convert String to char & char array using following methods. charAt
Program to convert char array to string (Java Stream, StringBuilder, String)
Given char array in java. We would like to convert char array to string using following methods. Java 8 Stream
Program to add two binary numbers in java (example)
Given two binary numbers in java We would like to find out sum of two binary numbers. Examples: add two
Check integer number is positive, negative, zero in java (example)
Given a integer number, check given number is positive. negative or zero. If the input number is greater than zero
Calculate power of integer number in java (example)
Given a integer number, find out the power of given number. Methods to calculate power of given number. Calculate power
Program to calculate simple interest (Java & Example)
Problem Statement ? Given Principal amount (P). Rate of interest (R). Time Period (T) Find out the simple interest in
Configured JCA/JCE Provider execution order (Java Security)
Problem Statement (Java Security): What is default provider used by cryptographic cipher. How to use providers apart from default providers
List configured JCE/JCA Providers in Java Runtime (Security)
Problem Statement (Java Security): Print or list all Java Cryptography Extension (JCE)/Java Cryptography Architecture (JCA) providers configured in Java Runtime.
Install Bouncy Castle Provider by configuring Java Runtime
Problem Statement ? Install Bouncy Castle (BC) Provider for Java Cryptography Extension (JCE) and Java Cryptography Architecture (JCA) Install and Configure
Base64 Encode decode URL/URI string in Java 8
Problem Statement ? Given URL (Uniform Resource Locator) or URI, we would like to encode URL to Base64 and decode
Base64 withoutPadding Encoding of string or byte array (Java8)
Problem Statement: Given input string or byte array, we would like to perform Base64 encoding withoutPadding. Base 64 Encoder class:
Base64 Encode & Decode of password string or byte array (Java8)
Problem Statement ? Given a string like password, byte array, we would like to perform Base64 encoding and decoding of
Convert decimal number to hexdecimal – (java api, iterative & recursive)
Given a decimal number (base 10), convert decimal number to hexadecimal (base 16) using java. We will discuss various methods
Convert decimal number to Octal – (java api, iterative & recursive)
Given a decimal number (base 10), convert decimal number to octal (base 8) using java. We will discuss various methods
Find sum of all digits of given number/Integer (java /example)
Problem Statement ? Given a number or integer in java, we would like to calculate the sum of all digits.
CountDownLatch concurrency/multithreading example in java
Given shared resources in java, Synchronize resources using CountDownLatch in java. Count down latch is concurrency (multi threading) construct (example).