checking till the square root of a number, etc. Remember, a prime number is a number which is not divisible by any other number, e.g. Write a Java program to check if a given number is prime or not.

We prepare for cross questions like using iteration over recursion and how to optimize the solution using caching and memoization. Write a simple Java program which will print Fibonacci series, e.g. Once you are gone through these questions, you can handle a good number of questions on real Job interviews. As I said, it includes questions from problem-solving, linked list, array, string, matrix, bitwise operators and other miscellaneous parts of programming.

Here is a big list of Java programs for Job Interviews. Top 50 Java Programs from Coding Interviews Cormen.īut, If you find the book challenging, you can also join a comprehensive online course on Data structure and algorithms like Data Structures and Algorithms: Deep Dive Using Java on Udemy to learn better and more comfortable. If you don't have a good knowledge of Data structure and algorithm, I suggest you to first read a good book on Data Structure and Algorithms like Introduction to Algorithms by Thomas H. These programs are from various Data Structure and Algorithm topics like an array, string, linked list, binary tree, etc. In this list, I am going to share 50 of such small programs from Java Programming interviews. They are usually preferred by many companies because it often requires 10 to 20 minutes to write the solution and discuss them. They are simple, but yet they give a good indication of the coding skill of prospective candidates. These type of tasks are very tough to crack if you don't have excellent coding skill.ītw, the most crucial question is how do you develop that kind of coding skill in the first place? Well, things always start small, and if you pay attention, there are many Java job interviews where you would have been asked to write small programs. The application should meet the output provided by the exercise itself. This online test usually gives you requirements and ask you to write a program in a limited time, usually 2 to 3 hours. If you look at tech giants like Amazon, Facebook, and Google they thoroughly test the coding skill of any developer they hire, notably Amazon who first send online coding exercises to filter Java programmers who can code. I would even suggest you should never hire anyone without testing their coding skill, coding is also an art, and more often than a good code is an excellent developer as well. Coding is an integral part of any programming job interviews, and Java development interviews are no exception.

Java sample source code