Practice Challenges for Fun

Explore practical coding challenges designed to reinforce your skills with Java classes and objects. Learn to manipulate strings, extract data, encode text, and perform arithmetic operations. This lesson helps you apply core concepts through hands-on coding exercises.

We'll cover the following...

- Quiz
  - Part 1
- - Part 2
- Practice Challenges
  - Challenge 1: Edit a string
- - Challenge 2: Display a tree
- - Challenge 3: Extract an email address
- - Challenge 4: Encode a string
- - Challenge 5: Display minutes and seconds
- - Challenge 6: Perform decimal arithmetic
- - Challenge 7: Display random numbers

Technical Quiz

What one println statement will display the following tabbed heading?

Name   Address   City   State   Zip

System.out.println("Name\nAddress\nCity\nState\nZip");

System.out.println("Name\tAddress\tCity\tState\tZip");

System.out.println("Name\pAddress\pCity\pState\pZip");

System.out.println("Name\cAddress\cCity\cState\cZip");

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1.A First Look at Java

2.Arithmetic Expressions

3.Debugging Interlude—The Errors Programmers Make

4.Using Classes and Objects

5.Class Definitions—The Fundamentals

6.Debugging Interlude—Common Mistakes with Classes

7.Decisions

8.Class Definitions—More Details

9.Multiway Decisions

10.Debugging Interlude—Avoiding Mistakes; Finding Mistakes

11.Repetition

12.Repetition Continued

13.Debugging Interlude—Debugging Loops

14.Arrays

15.An Array-Based Data Structure

16.Debugging Interlude—Debugging Arrays

17.Glossary

18.Appendixes

19.Copyright

Practice Challenges for Fun

Quiz

Part 1

Part 2

Practice Challenges

Challenge 1: Edit a string