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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:

Note: If you are not habituated with Java programming you can learn from the following :

More to Come !

Popularity of Programming Language
Worldwide, May 2021 compared to a year ago:

`
Rank Change Language Share Trend
1 Python 29.9 % -1.2 %
2 Java 17.72 % -0.0 %
3 Javascript 8.31 % +0.4 %
4 C# 6.9 % -0.1%
5 up arrow C/C++ 6.62 % +0.9 %
6 down arrow PHP 6.15 % +0.1 %
7 R 3.93 % +0.0 %
8 Objective-C 2.52 % +0.1 %
9 Swift 1.96 % -0.2 %
10 up arrow TypeScript 1.89 % +0.0 %
11 down arrow Matlab1.71 % -0.2 %
12 Kotlin 1.62 % +0.1 %
13 up arrow Go 1.42 % +0.1 %
14 down arrow VBA 1.33 % -0.0 %
15 up arrow Rust 1.13 % +0.4 %
16 down arrow Ruby 1.12 % -0.1 %
17 up arrow Ada 0.72 % +0.3 %
18 down arrow Visual Basic 0.7 % -0.2 %
19 down arrow Scala 0.67 % -0.4 %
20 down arrow Abap 0.61 % +0.1 %
21 down arrow Dart 0.55 % +0.0 %
22 up arrow Lua 0.49 % +0.1 %
23 up arrow Julia 0.42 % +0.1 %
24 down arrow Groovy 0.41 % -0.0 %
25 down arrow Perl 0.4 % -0.0 %
26 down arrow Cobol 0.36 % -0.1 %
27 up arrow Delphi/Pascal 0.24 % -0.0 %
28 down arrow Haskell 0.21 % -0.1 %

Source : http://pypl.github.io/PYPL.html

TIOBE Index for May 2021

May 2021 May 2020 Change Programming Language Ratings Change
1 1 C 13.38% -3.68%
2 3 up arrow Python 11.87% +2.75%
3 2 down arrow Java 11.74% -4.54%
4 4 C++ 7.81% +1.69%
5 5 C# 4.41% +0.12%
6 6 Visual Basic 4.02% -0.16%
7 7 JavaScript 2.45% -0.23%
8 14 up arrow Assembly language 2.43% +1.31%
9 8 down arrow PHP 1.86% -0.63%
10 9 down arrow SQL 1.71% -0.38%
11 15 up arrow Ruby 1.50% +0.48%
12 17 up arrow Classic Visual Basic 1.41% +0.53%
13 10 down arrow R 1.38% -0.46%
14 38 up arrow Groovy 1.25% +0.96%
15 13 down arrow MATLAB 1.23% +0.06%
16 12 down arrow Go 1.22% -0.05%
17 23 up arrow Delphi/Object Pascal 1.21% +0.60%
18 11 down arrow Swift 1.14% -0.65%
19 18 down arrow Perl 1.04% +0.16%
20 34 up arrow Fortan 0.83% +0.51%

Source : https://www.tiobe.com/tiobe-index/

List of Exercises with Solutions :

[ 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.]



Java: Tips of the Day

Check if at least two out of three booleans are true:

Rather than writing:

if (someExpression) {
    return true;
} else {
    return false;
}

Write:

return someExpression;

As for the expression itself, something like this:

boolean atLeastTwo(boolean a, boolean b, boolean c) {
    return a ? (b || c) : (b && c);
}

or this (whichever you find easier to grasp):

boolean atLeastTwo(boolean a, boolean b, boolean c) {
    return a && (b || c) || (b && c);
}

Ref: https://bit.ly/2OYPQD7