java programs

17 April

Convert Roman Number to Integer in Java

Learn about how to convert Roman number to Integer in java.

05 April

Count the Number of Occurrences of a Character in a String in Java

In this article, we will look at a problem: Given an Input String and a Character, we have to Count the Occurrences of such Character in the given String. For Example, If the Given String is : "Java2Blog" and we have to count the occurrences of Character ‘a’ in the String. Therefore, Count of  'a' is […]

25 December

Find automorphic number in java

Learn about how to find automorphic number in java using different methods

25 December

Find nth prime number in java

Learn about how to find nth prime number in java.

24 December

How to capitalize first letter in java

Learn about how to capitalize first letter in java.

09 October

Java program to find first and last digit of a number

In this article, we are going to find first and last digit of a number in Java. To find first and last digit of any number, we can have several ways like using modulo operator or pow() and log() methods of Math class etc. Let’s see some examples. Before moving to example, let’s first create […]

30 September

Find Perfect Number in Java

In this article, we are going to find whether a number is perfect or not using Java. A number is called a perfect number if the sum of its divisors is equal to the number. The sum of divisors excludes the number. There may be several approaches to find the perfect number. For example: 28 […]

28 September

Number guessing game in java

In this article, we will implement Number guessing game in java. The number guessing game is based on a concept where player guess a number between a range. If player guess the exact number then player win else player loose the game. Since this game provides limited attempts, so, player must guess the number with […]

03 October

Happy Number program in Java

In this article, we are going to learn to find Happy Number using Java. Let’s first understand, what is Happy Number? What is a Happy Number? A number which leaves 1 as a result after a sequence of steps and in each step number is replaced by the sum of squares of its digit. For […]