The basics of Scala and Java with key features can be used to understand both languages, where which one language is better to learn at this resolution year. The languages which are mentioned here were unknown to the globe, but both languages are learnt and used by the Hire Freelancers and web developers across the globe.


Scala is a general purpose programming language which can support only functional programming. It is well concisely designed, which has a type of static system. The name Scala has been derived from a language which means a design that grows with more demand of users. While reading information about Scala, one can experience an alternative to Java and the intentions were to eliminate some Java restrictions. The source code of Scala gets compiled only with Java bytecode, which means the resulting executable code, may run on JVM (Java Virtual Machine). Scala programming has many features in functional languages such as Standard ML, Haskell and Scheme.

Features of Scala:

  • Scala has a model of compiling, which is similar to Java and C++. Then it is subjected to separate dynamic class loading and compiling. Scala results in the code of Scala function thus leads tothe calling of Java library.
  • The interesting feature of Scala is that it can decompile its code to readable Java code. The Java code and Scala code were hazy for Java Virtual Machine. The only thing you need for an extra run time is named as Scala library.
  • In this language, the writing expression and type, this leads to an easy and clear coding. You will see many Scala features that are available in C++. There is an influence of both C++ and Java in this Scala language.
  • Other features include pattern matching and immutability. Scala makes use of lazy evaluation, which is being a function of Scala language. It supports covariance, algebraic data types, and contravariance including a type of anonymous. The special features like optional operator overloading and raw strings and named parameters were exceptional.


Java is an object oriented language which is similar to C++ architecture which is a neutral and high-level programming language developed by the Sun Microsystems. The name of Java was originally called as OAK. Object Oriented Programming approaches program development and organization, which is attempted to be eliminated as some pitfalls of convenient programming method by incorporating best features of structured programming with many new concepts. The Freelance services is a new way of developing and organizing the program and it has nothing to do with Java, a particular language.

Features of Java:

  • Java program can easily move from one computer system to another computer system anywhere and anytime. Upgrades and changes in processors, system resources and operating systems will not be forced to any changes from Java programs.
  • Java is one of the robust languages that provide several safeguards which ensure a reliable code. It strictly checks, compiles and run time for the type of data. Java is incorporated with the concept of exception handling, which is captured as a series of errors and eliminated for any crashing risks within the system.
  • Java is supported as a multi-threading programming, which means it won’t wait for an application to complete one task before to start another one.
  • It is designed as distributed language for the creation of application on the network. It is able to share both programs and data. Application of Java can be opened and access remote objects on the internet as they do in a local system. Enables the multiple programmers at different remote locations working together on the single project.

Difference between Java and Scala:

  • The major difference between Java and Scala is it is a concise and succinct code. Scala drastically reduce as many lines from the application of Java by making use of treating an object, type inference, function passing and some other features.
  • Scala is designed to be expressed as a common pattern of programming in a concise, elegant and type-safe way. The language will encourage you in writing code in an immutable style that can make to apply parallelism and concurrency easily.
  • Scala is learnt as a steep curve when compared to Java. Scala syntax looks repulsive and confusing when compared to Java. This hurdle may follow a good Scala book such as Scala programming or Action Scala. Both are very excellent Scala books for Java developers, who want to learn a Scala language.
  • The cool feature of Scala is it is built in an evaluation of lazy, which is allowed to defer computation of time-consuming until it needs and do this keyword named as lazy. For example, Scala Cook Book is another book to buy which contains a lot of examples of various Scala features.
  • Java is implemented as a full functional programming that makes use of more convenient for Hire Freelancers and developers working on the cross-platform objects.
  • Some people are arguing that Scala is less readable than Java because it is really a nested Scala code. It defines functions inside the function, inside the object, inside the class and inside other functions. These codes are nested which may improve more clarity, but if it’s written, it’s very poor. It is actually tricky for people to understand.
  • The important difference between Scala and Java is it’s a function which is an object in Java. Scala can treat as many functions as well as methods as they are only variables. It means you can be passed around like an object. You have to see the source code where the Scala function accepts another function. In fact, this can give an enormous power of language.
  • Another major difference is that Scala can support only operator overloading. You can operate and overload in Java and create a new operator in any type, but already you know that the Java does not support operator overloading.

Both languages can be used based on the functions and features. Scala is a very big fan to jump on us while the inference based on what you see as a feedback from many developers and going via different forums. Still, it is a personal preference from people doing Freelance services; they can find many features and interoperability with Java.

Kitty Gupta