Java Coding Practice Problems Last Updated : 11 Aug, 2025 Comments Improve Suggest changes Like Article Like Report Java coding practice problems help learners and professionals improve their programming skills through real-world challenges, covering topics like data structures, algorithms, and object-oriented concepts.Fundamentals – The basic building blocks of the Java language, including how to write and run a program, use variables to store data, apply operators for calculations, and control program flow with decisions (if/else) and loops.Methods – Small sections of code designed to perform a specific task. Methods make code reusable, easier to read, and maintain. You pass inputs (parameters) and get results (return values).Arrays – A way to store multiple values of the same type in one container. Arrays keep items in order and let you access them using an index number.Strings – Special objects in Java that represent text. Strings store characters and come with built-in tools for comparing, joining, and modifying text.OOPs (Object-Oriented Programming) – A style of programming where you model real-world things as objects. These objects have properties (fields) and actions (methods), and you can organize them using concepts like inheritance, polymorphism, abstraction, and encapsulation.Sorting and Searching Algorithms – Step-by-step methods for arranging data (like numbers or words) in order or finding a specific item quickly. Examples include quicksort, mergesort, and binary search.Collections – A set of ready-made classes in Java for storing and managing groups of objects, like lists, sets, and maps, without having to build your own data structures from scratch.Stream & Lambda Expressions – Modern Java features for processing data in a clean, functional style. Streams let you work with collections in a flow-based way, and lambdas are short, inline functions that make code more concise.Practice ProblemsJava Fundamentals Coding Practice ProblemsJava Methods Coding Practice ProblemsJava Arrays Coding Practice ProblemsJava Strings Coding Practice ProblemsJava OOPs Coding Practice ProblemsJava Sorting and Searching Algorithms Coding Practice ProblemsJava Collections Coding Practice ProblemsJava Stream & Lambda Expression Coding Practice Problems Comment More infoAdvertise with us A anuragtriarna Follow Improve Article Tags : Java Practice Tags : Java Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. Known for its Write Once, Run Anywhere capability, which means code written in Java can run on any device that supports the Java Virtual Machine (JVM).Syntax and s 7 min read BasicsIntroduction to JavaJava is a high-level, object-oriented programming language developed by Sun Microsystems in 1995. It is mostly used for building desktop applications, web applications, Android apps, and enterprise systems.Key Features of JavaPlatform Independent: Java is famous for its Write Once, Run Anywhere (WOR 4 min read Java Programming BasicsJava is one of the most popular and widely used programming language and platform. A platform is an environment that helps to develop and run programs written in any programming language. Java is fast, reliable and secure. From desktop to web applications, scientific supercomputers to gaming console 3 min read Java MethodsJava Methods are blocks of code that perform a specific task. A method allows us to reuse code, improving both efficiency and organization. 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From basic Java programs like the Fibonacci series, Prime numbers, Factorial numbers, and Palindrome numbers to advanced Java programs.Java is one of the most popular programming languages today because of its 8 min read Java Exercises - Basic to Advanced Java Practice Programs with SolutionsLooking for Java exercises to test your Java skills, then explore our topic-wise Java practice exercises? Here you will get 25 plus practice problems that help to upscale your Java skills. As we know Java is one of the most popular languages because of its robust and secure nature. But, programmers 7 min read Java Quiz | Level Up Your Java SkillsThe best way to scale up your coding skills is by practicing the exercise. And if you are a Java programmer looking to test your Java skills and knowledge? Then, this Java quiz is designed to challenge your understanding of Java programming concepts and assess your excellence in the language. 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