siddik-1997 / problem-solve-with-java

This repository contains some solutions for java problems. The code is well-commented and optimized for readability and efficiency. Feel free to use and modify the code for your own projects.

Problem-solve-with-Java

What is Java?

Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible.

Why Java is highly used?

Java is widely used by developers due to its ease of programming and execution. It allows for the creation of applications that can run on a single device or be distributed across multiple devices within a network. The fact that Java code can be written once and run anywhere at any time is another significant factor contributing to its popularity.

Below are the best FREE IDEs for Java programming:

• Eclipse
• IntelliJ IDEA
• BlueJ
• MyEclipse
• Xcode
• Apache NetBeans

But I used IntelliJ (Community Edition) for executing this problems.

Problems are:

• Print prime numbers form 2 to 100.

• Write a program that will count number of notes from given array:

  [1000,500,200,100,50,20,10,5,2,1]

  Input: 562

  Output:

  500 1

  50 1

  10 1

  2 1

• Find out sum of digits of a number:

  Input: 152

  Output: 8

• Count Vowels and consonants from a word:

  Input: Dhaka

  Output: Vowel: 2, Consonant: 3

• Encrypt word when A=F:

  Input: Apple

  Output: Fuuqj

• Create a program which will take input from users for registration and save the info to a json file.

  The system will require following user info: Full Name, email, password, address, mobile no.