Java Programming Exercises, Practice, Solution
Java Exercises
Java is the foundation for virtually every type of networked application and is the global standard for developing and delivering embedded and mobile applications, games, Web-based content, and enterprise software. With more than 9 million developers worldwide, Java enables you to efficiently develop, deploy and use exciting applications and services.
The best way we learn anything is by practice and exercise questions. Here you have the opportunity to practice the Java programming language concepts by solving the exercises starting from basic to more complex exercises. A sample solution is provided for each exercise. It is recommended to do these exercises by yourself first before checking the solution.
Hope, these exercises help you to improve your Java programming coding skills. Currently, following sections are available, we are working hard to add more exercises .... Happy Coding!
List of Java Exercises:
- Basic Exercises Part-I [ 150 Exercises with Solution ]
- Basic Exercises Part-II [ 99 Exercises with Solution ]
- Data Types Exercises [ 15 Exercises with Solution ]
- Conditional Statement Exercises [ 32 Exercises with Solution ]
- Array [ 79 Exercises with Solution ]
- String [ 112 Exercises with Solution ]
- Date Time [ 44 Exercises with Solution ]
- Methods [ 23 Exercises with Solution ]
- Numbers [ 28 Exercises with Solution ]
- Input-Output-File-System [18 Exercises with Solution ]
- Collection [ 126 Exercises with Solution ]
- Math [ 27 Exercises with Solution ]
- Sorting [ 19 Exercises with Solution ]
- Search [ 7 Exercises with Solution ]
- Regular Expression [ 30 Exercises with Solution ]
- More..
Note: If you are not habituated with Java programming you can learn from the following :
More to Come !
Popularity of Programming Language Worldwide, Dec 2022 compared to a year ago:
| Rank | Change | Language | Share | Trend |
|---|---|---|---|---|
| 1 | Python | 28.34 % | -1.0 % | |
| 2 | Java | 16.93 % | -0.8% | |
| 3 | Javascript | 9.28 % | +0.3% | |
| 4 | C# | 6.89 % | -0.3% | |
| 5 | C/C++ | 6.64 % | -0.3 % | |
| 6 | PHP | 5.19 % | -1.0 % | |
| 7 | R | 3.98 % | -0.1% | |
| 8 |  |
TypeScript | 2.79 % | +1.1% |
| 9 | |
Swift | 2.23 % | +0.6% |
| 10 |  |
Objective-C | 2.22% | +0.1% |
| 11 | |
Go | `2.02% | +0.7% |
| 12 | |
Rust | 1.78 % | +0.8% |
| 13 | |
Kotlin | 1.71 % | -0.0% |
| 14 | |
Matlab | 1.61 % | +0.0% |
| 15 | |
Ruby | 1.12% | +0.2% |
| 16 | |
VBA | 1.08 % | -0.1 % |
| 17 | Ada | 0.96 % | +0.2 % | |
| 18 | |
Dart | 0.85 % | +0.4 % |
| 19 | |
Scala | 0.69 % | -0.0 % |
| 20 | |
Lua | 0.65 % | +0.3 % |
| 21 | |
Visual Basic | 0.57 % | -0.1 % |
| 22 | |
Abap | 0.55 % | +0.1 % |
| 23 | |
Perl | 0.53 % | +0.1 % |
| 24 | Groovy | 0.36 % | +0.0 % | |
| 25 | Cobol | 0.33 % | +0.0 % | |
| 26 | Haskell | 0.25 % | +0.0 % | |
| 27 | |
Julia | 0.24 % | +0.0 % |
| 28 | |
Delphi/Pascal | 0.2 % | -0.0 % |
Source : https://pypl.github.io/PYPL.html
TIOBE Index for December 2022
| Dec 2022 | Dec 2021 | Change | Programming Language | Ratings | Change |
|---|---|---|---|---|---|
| 1 | 1 | Python | 16.66% | +3.76% | |
| 2 | 2 | C | 16.56% | +4.77% | |
| 3 | 4 | |
C++ | 11.94% | +4.21% |
| 4 | 3 | |
Java | 11.82% | +1.70% |
| 5 | 5 | C# | 4.92% | -1.48% | |
| 6 | 6 | Visual Basic | 3.94% | -1.46% | |
| 7 | 7 | JavaScript | 3.19% | +0.90% | |
| 8 | 9 | |
SQL | 2.22% | +0.43% |
| 9 | 8 | |
Assembly language | 1.87% | -0.38% |
| 10 | 12 | |
PHP | 1.62% | +0.12% |
| 11 | 11 | R | 1.25% | -0.34% | |
| 12 | 19 | |
Go | 1.15% | +0.20% |
| 13 | 13 | Classic Visual Basic | 1.15% | -0.13% | |
| 14 | 20 | |
MATLAB | 0.95% | +0.03 |
| 15 | 10 | |
Swift | 0.91% | -0.86% |
| 16 | 16 | Delphi/Object Pascal | 0.85% | -0.30% | |
| 17 | 15 | |
Ruby | 0.81% | -0.35% |
| 18 | 18 | Perl | 0.78% | -0.18% | |
| 19 | 29 | |
Objective-C | 0.71% | +0.29% |
| 20 | 27 | |
Rust | 0.68% | +0.23% |
Source : https://www.tiobe.com/tiobe-index/
List of Exercises with Solutions :
- HTML CSS Exercises, Practice, Solution
- JavaScript Exercises, Practice, Solution
- jQuery Exercises, Practice, Solution
- jQuery-UI Exercises, Practice, Solution
- CoffeeScript Exercises, Practice, Solution
- Twitter Bootstrap Exercises, Practice, Solution
- C Programming Exercises, Practice, Solution
- C# Sharp Programming Exercises, Practice, Solution
- PHP Exercises, Practice, Solution
- Python Exercises, Practice, Solution
- R Programming Exercises, Practice, Solution
- Java Exercises, Practice, Solution
- SQL Exercises, Practice, Solution
- MySQL Exercises, Practice, Solution
- PostgreSQL Exercises, Practice, Solution
- SQLite Exercises, Practice, Solution
- MongoDB Exercises, Practice, Solution
[ Want to contribute to Java exercises? Send your code (attached with a .zip file) to us at w3resource[at]yahoo[dot]com. Please avoid copyrighted materials.]
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.
Java: Tips of the Day
How to convert object array to string array in Java?
Another alternative to System.arraycopy:
String[] stringArray = Arrays.copyOf(objectArray, objectArray.length, String[].class);
Ref: https://bit.ly/3hqxV4n
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