C++ vs Java: What’s the Difference with Examples
C++ vs. Java programming languages are designed for everyone, no matter if you are new to programming or you already have extensive programming experience in other languages. They are also among the most popular ones. Let’s discuss the basic difference between c++ and java, just a case.
What is Java Language?
Java is a general-purpose programming language. It refers to object-oriented programming languages, strongly typed languages.
The creators of Java wanted to implement the WORA principle which means write once, run anywhere. This means that when you design an application written in Java it can run on any platform as long as the Java Runtime Environment (JRE) is installed on it.
This task is solved by compiling the code written in Java into bytecode. This format is executed by JVM or Java virtual machine. The JVM accordingly is part of the Java Runtime Environment (JRE). The virtual machine is platform-independent.
Java also implements a memory management mechanism called the Garbage Collection (GC). The developer creates the objects, and the JRE uses the garbage collector to clean up memory when the objects stop.
The syntax of the Java language is similar to that of other C-like languages. And here are some of its features:
- case sensitivity – User and user identifiers in Java are different entities;
- lowerCamelCase is used for method naming. If the method name consists of a single word, it must begin with a lowercase letter. Example: firstMethodName ();
- UpperCamelCase is used for class naming. If the name consists of one word, it must start with an uppercase letter. Example: FirstClassName.
- the name of the program files must exactly match the name of the class, taking into account the case sensitivity.
For example, if the class is named FirstClassName, the file must be named FirstClassName.java;
- identifiers always start with a letter (A-Z, a-z), $ or underscore _;
You can learn more about Java syntax on multiple free resources and tutorials available on the web as Java has a solid and complex library and many useful tools.
What is C++ Language?
C ++ is a compiled strongly typed general-purpose programming language. It supports different programming paradigms: procedural, generalized, functional; most attention is paid to the support of object-oriented programming.
In fact, C ++ is a set of commands that tell the computer what to do. This set of commands is usually called source code or just code. Commands are either “functions” or “keywords”. Keywords (C / C ++ reserved words) are the basic building blocks of the language. Functions are complex building blocks as they are written in terms of simpler functions.
This c plus plus vs java structure of functions resemble the content of a book. The table of contents can show the chapters of the book, each chapter in the book can have its own table of contents, consisting of paragraphs; each paragraph can have its own sub-paragraphs.
Although C ++ provides many common functions and reserved words that you can use, there is still a need to write your own functions.
Key Differences between C++ Vs Java
Both Java and C ++ are object-oriented programming languages, but this is where their similarities end. There are more differences between them.
Sure thing there is c++ and java difference which may be pretty critical if you approach choosing either of languages for the project development or any other particular case. And here are the criteria to pay attention to.
Libraries
Java or c++? Which library is bigger or better? Java has pretty much accumulated with libraries. But how to understand which ones should be used and which shouldn’t? Here is a short description of some of them:
- lang,
- util,
- nio,
- io,
- net.
In Java, we also have libraries for working with the GUI frameworks: javax.swing (a rather outdated extension of the even older java.awt).
We can even play music and create MIDI files using java.sound, etc.
There are the C Standard Library and C ++ Standard Library required for acquaintance. Coders need to make sure they understand the difference between C and C ++ first. In addition, they must study those that are going to be applied in a particular project.
Java has built-in support for documentation comment. C ++ does not support documentation comments. You may also use online Java compiler which’s convenient.
Input mechanism
Java is mostly interpreted, so it is platform-independent. C ++ generates object code; the same code may not run on different platforms.
Thread support
Java has built-in support for threads. Java has class threads, which are inherited to create a new thread and override the run method.
Meanwhile, C ++ has no native support for threads. For these purposes, non-standardized third-party libraries are used.
Supporting method
Java has an overloading method but is missing operator overloading. The “Stringclass” class is not using the + and + = operators to concatenate strings, and string “Stringexpressions” use automatic conversion types, but this is a special built-in case.
C ++ supports both method overloading and operator overloading. Also, read more on scope resolution operator in C++.
Memory management
Java supports automatic control of the release of the dynamic memory. It, unlike C ++, does not support destructors.
C ++ supports destructors. This function is automatically activated when the object is destroyed.
Multiple inheritances
Thus Java does not provide multiple inheritances, at least not like C ++. Multiple inheritances are a feature of C++ where a class can inherit from more than one class.
To disambiguate during multiple inheritances java vs c plus plus, the keyword “virtual” is used. (GeeksforGeeks)
Conclusion
Here you are with the difference between java and c plus plus. The Java language may be perfect for commercial projects. It is in great demand in corporations since support and refactoring of existing projects will always be relevant in large financial companies.
You may well cope with the cross-platform development and create a system for any platform with it. Cpp vs. java, however, has other advantages like the support of both method overloading and operator overloading, supports destructors, etc. If it’s still such a mess for you to distinguish between them, feel free to contact us, we’ll explain it better.
