Below are links to the solutions to Deitel’s **Java How to Program** (9th Edition) exercises that have been posted so far. This page is updated as more solutions to the exercises are posted. You are “**STRONGLY ADVISED**” to try to solve the problem first before checking the solution. Note that there are multiple ways of solving problems. That is to say, you may have another way (maybe even better) of solving the problem(s). In such case(s) please let me know. Only solutions to programs are provided here. Answers to self review exercises, multiple choice questions and theoretical questions are not provided. You can test run the programs online for free at ideone.com or repl.it.

#### Chapter Two

Exercise 2.14 – Program to display the numbers 1-4 on screen using different print methods

Exercise 2.15 – Java program to perform simple arithmetics

Exercise 2.16 – Program to compare two numbers using java

Exercise 2.17 – Arithmetic smallest and largest program in Java

Exercise 2.18 – Simple java program to display shapes with asterisks

Exercise 2.24 – Program to find the maximum and minimum of any five integer numbers

Exercise 2.25 – Program to check if a number is odd or even

Exercise 2.26 – Program to check if a number is a multiple of another number

Exercise 2.27 – Checkerboard pattern of asterisks

Exercise 2.28 – Program to calculate the diameter, circumference and area of a circle

Exercise 2.29 – Program to display the integer equivalent of characters

Exercise 2.30 – Program to separate digits in an integer

Exercise 2.31 – Java program to print table of squares and cubes

Exercise 2.32 – Program to count number of negative, positive and zeros input

Exercise 2.33 – Body Mass Index (BMI) Calculator in Java

Exercise 2.34 – Java world population growth calculator

Exercise 2.35 – Car-Pools savings calculator

#### Chapter Three

Exercise 3.11 – Java gradebook program using instance variables

Exercise 3.13 – Program to show how to use constructors in Java

Exercise 3.13 – Program to create invoice of items sold in a store

Exercise 3.14 – Program to calculate and display employee salary

Exercise 3.15 – Java Program to display date

#### Chapter Four

Exercise 4.1 – Java GUI and graphics case study exercise

#### Chapter Five

Exercise 5.32 – Facebook user base growth calculator

## 17 Comments

Thank you very much!

does anyone have the solution for 18.20 in exercise qs

Does anyone have the solution for 17.11 on page 766 in excercises?

Waiting for your 3rd and 4th chapter full exercise solution of this book.. Please post as fast as you can :(

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Anyone has solution to question 10.17?

Yes. I have solved it and added it to the list. You can check it out by clicking here.

6.35

Hi. I am very busy at the moment. I will post the solutions as soon as possible. Please do check back soon.

please sir give us solutions of chapter 10 polymorphism

Anyone has solution to question 5.32? (making a difference section)

You are welcome.

thank u so much, u r super

I'm glad to find these info

Hi Mahdi, I don't know any website that offer the answers free. The answers are on the Pearson's website but it is only for "Instructors". You can also find the answers on chegg but it is not free. There is also an incomplete set of answers on github (its free though).

The answers are posted here

FREEand with explanations where necessary. This page is updated as new answers are posted. So,bookmark this page/add it to your favourite sites and check back often. I'll try and post the answers to the next few chapters as soon as possible.I do not have problems with the assignments although it takes me longer to solve some. I would like to know the answers to the exercise questions that do not have answers in the book. Do you know of any website that offers these answers?

Hi Abid. Thanks. I'm glad you found it helpful.

its nice post. I got help from this post. Mr abid