This blog is for people who want to learn Java or Scala and don’t know where to start. Before you spend a lot of time learning Java or Scala, here are the 8 best things to know.
What is JVM?
JVM (Java Virtual Machine) is a virtual machine that can run Java bytecode. It converts the code into machine-readable format at runtime. It provides a platform to execute the code and also helps in compiling the code at runtime.
What are Java Platforms?
Java has 3 platforms:
Java SE – Standard Edition
Java EE – Enterprise Edition
Java ME – Micro Edition
What is JDK, JRE, and JVM?
JDK stands for Java Development Kit which includes JRE + development tools
JRE stands for Java Runtime Environment which includes JVM + libraries + other files that JVM uses at runtime.
JVM stands for Java Virtual Machine which actually executes the java bytecode.
Java and Scala are two of the most popular programming languages in the world.
Java is a programming language that runs on the JVM (Java Virtual Machine). Java is a general-purpose, object-oriented programming language with millions of developers worldwide.
Scala is an object-oriented, multi-paradigm, functional language. It runs on JVM and interoperates easily with Java. Scala is statically-typed and supports both imperative and declarative styles of programming.
But before you spend a lot of time learning Java or Scala, here are the 8 best things to know about these two languages:
It is easy to get started with Java or Scala, but if you are seriously considering making a career out of it, there are a few things you should know before you invest too much time and energy.
In the last year alone, I’ve had conversations with over 100 people that were interested in learning Java or Scala (and sometimes both), or already were pretty far along in their journey, and we always ended up talking about the same 8 things. This blog post will cover my top 8 tips for anyone who is starting out or considering learning Java or Scala.
So what are the eight things you need to know? They may not be what you think…
This article is meant as a guide for anyone who wants to learn Java or Scala. I’ll be discussing the 8 most important things you need to know about Java and Scala, and how they compare with each other. I’ll be comparing the languages, not any particular IDE.
I’ve been programming in Java for over 9 years, and in Scala for 7 years now. I’ve been a core contributor to several open source projects in both languages, and while I was working at Twitter I was one of the language experts on their team. This article is based on my experiences with these languages, as well as what I’ve seen others struggle with.
In the world of programming, many choices are available. One of them is choosing the language you’d like to learn. Some people choose Python, some choose C++, and then there’s Java or Scala. Learning any of these languages can be helpful in expanding your knowledge and making programming easier to understand.
Before you dive headfirst into learning Java or Scala, it’s important to know some key facts about these two languages in order to make the right choice for your career or skillset. Because both languages are so similar, it can often be difficult to choose one over the other.
1. Scala runs on Java Virtual Machine (JVM).
Both languages run on JVM, meaning that if you decide to learn one of them, you’re also learning how JVM works in the process without having to learn it separately. This gives you a great advantage because you will be able to take your knowledge from either language and apply it elsewhere since it’s not specific to one language or the other. In addition, if you want to migrate from Java to Scala or vice versa, it won’t be a hassle for you since they both use JVM.
It’s been a while since I started learning Java and Scala, so I think it’s time that I share some of my experience with you.
The most important thing you need to know:
1.Java is static typed language. Scala is dynamic typed language.
2.Java is object oriented but not functional programming language. Scala is both object oriented and functional programming language.
3.Java does not support operator overloading because it can lead to ambiguous code. Scala supports operator overloading because it does not lead to any issues related to ambiguity or readability in the code.
4.Java is a compiled language, meaning the code you write has to be translated into machine readable form before it can be run on a computer. Scala is interpreted language, and doesn’t require compilation as such but rather it is translated from high level language (Scala in this case) into low level language (bytecode). The key difference between an interpreted language and a compiled one is that in interpreted languages, the program is executed line by line at the time of execution, whereas in the compiled ones, the whole program is translated at once into machine understandable form which can then be executed as a whole and line by line as well (in case of JVM). The advantage of
You can write, compile and execute Java code on any kind of system. It is platform independent.
Java is a object oriented language. You have to think in terms of objects when coding in Java.
Java is a strongly typed language. That means you need to declare the variables and methods before using them. Since Java is statically typed, it checks for errors at compile time rather than runtime.
Java supports multi-threading which means you can run multiple tasks in parallel within the same program.
Java has an automatic garbage collector which reclaims memory from no longer used objects. This prevents memory leaks and makes sure that the application does not run out of memory during execution.
Java is a platform independent language because it runs on top of a virtual machine called JVM (Java Virtual Machine). The JVM converts Java bytecode into machine code and runs it on top of the operating system (OS).