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 […]
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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
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 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
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.
Find number of consecutive 1’s in a binary number in java (example)
Given a decimal number in java (base 10) Find out number of consecutive 1’s in a binary number. 1. Examples
Write or redirect standard output error stream to a file in java
Given a standard error output stream, Write the standard error to a file in java. We will use System.setErr method to redirect std output to a file.
Write or redirect console output to a file & again reset to standard output in java
In java application, we write to console output using System.out.print*. We would like to redirect console output to a file.
Convert String object to lower case & upper case in java (example)
Given a String in java, we would like to convert the input String to lower case & upper case. String
Convert decimal number to binary – (java api, iterative & recursive)
Given a decimal number (base 10), convert decimal integer to binary number (base 2) using java. We will discuss various
Convert hexadecimal to decimal – java api, iterative & recursive
Given a hexadecimal number, convert hexadecimal number to decimal number using java. We will discuss various methods to convert hexadecimal
Convert decimal to hexadecimal – java api, iterative & recursive
Given a decimal number (base 10), convert decimal to hexadecimal number (base 16) using java. We will discuss various methods to
Find LCM of two numbers using GCD in java (example)
LCM (Least common multiple) of two integers is the least positive integer that is divisible by both a and b. e.g
Reverse each word of a string using StringBuilder in java (example)
Given a string in java, reverse each word of string using StringBuilder in java. Let us look into couple of
Reverse string word by word in java (stack/ stringbuilder /example)
Given a string in java, reverse the string word by word. Let us look into couple of examples to understand
Swap two numbers in java using third or temporary variable (example)
Given two input numbers, swap numbers using temporary variable. e.g. Given two input numbers x = 10 & y =
Check whether given integer number is prime or not in java (example)
Given an integer, check whether input number is prime or not. A prime number is a natural number greater than 1
Program to convert binary number to decimal (java api, iterative & recursive)
Given a binary number, convert binary number to decimal number using java. We discuss various methods to convert binary number
GCD of two numbers Euclidean algorithm in java (iterative/ recursive)
The greatest common divisor (GCD) is the largest natural number that divides two numbers without leaving a remainder. e.g gcd ( 10,15) =
Check given number is palindrome using java (non-recursive/example)
What is palindrome ? A palindrome is a word, number, phrase, or other sequence of characters which reads the same from