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JVM (Java Virtual Machine) acts as a run-time engine to run Java applications. It is the one that actually calls the main method present in a java code.



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DID YOU KNOW

"JAVA WAS DEVELOPED BY CHANCE"


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OOP concepts in Java are the main ideas behind Java’s Object Oriented Programming.
They are listed as below:
1. Object
2. Class
3. Abstraction
4. Methods
5. Indentifiers
6. Encapsulation
7. Association
8. Inheritance
9. Polymorphism.
Grasping them is key to understanding how Java works.


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Java t is the most popular programming language for Android smartphone applications and is also among the most favored for the development of edge devices and the internet of things.
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DID YOU KNOW


java is a go to instrument for enterprices


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Like any industry, things continue to change and evolve, and you’ll need to consistently stay on top of these changes and learn new skills. This is especially important in the technical industry, and more specifically, as a Java developer.

Because salary is often a big motivator for many, it’s easy to see why people often want to know what it will take to grow in their career and earn a higher one. As a Java developer, it helps to know about the different roles and average salaries for each.



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Java is one of the most widely used programming language. It being an object oriented language, is used as the server-side language for most back-end development projects, including those involving big data and Android development programmes.



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9 yr old boy:-
lets make a GTA 5 game of our own without knowing basic syntax of any language



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DID YOU KNOW


The initial name of java was "oak"



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A Java Developer is responsible for the design, development, and management of Java-based applications.
Since Java is used so widely, particularly by large organizations, the daily roles vary widely and can include owning a particular application or working on several of them at a time.
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🔰Features of Java
Simple
Secure
Robust
Platform independent
Familiar
Object oriented
Multi-thread concurrency
Functional
Better performance

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⭕ COMPANIES USING JAVA
Twitter
Uber
Google
Airbnb
Netflix
Spotify
Amazon
Pinterest
eBay
TCS
Myntra etc

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⭕How Java works
Java works by first compiling the source code into bytecode. Then, the bytecode can be compiled into machine code with the Java Virtual Machine (JVM). Java’s bytecode can run on any device with the JVM which is why Java is known as a “write once, run anywhere” language.


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Introduction to Java language
♦️ A general purpose object oriented programming language
♦️ Write Once Run Anywhere ( WORA)
♦️ Designed to be small, simple and portable across platforms and operating system
♦️ Widespread acceptance
♦️ Designed for easy Web/Internet applications

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If you have a Python development project of any complexity, being able to perform testing on new code is essential. The Pytest package provides a variety of modules to help you do this. Whether it’s a simple unit test or a more complex functional test, Pytest can help you write it.
.

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For Windows Python programming in particular, Pywin32 is a must-have package. It provides access to many of the native Windows API functions, allowing you to do things like interact with the Windows registry, use the Windows clipboard, and much more.

Pywin32 won’t do you much good if you’re building a cross-platform Python app, but Windows developers might find that they like it so much that they use it instead of native Windows tooling.

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In python, we can print more than one list simultaneously by using "zip" function


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There is a long list of Python packages designed for working with complex data sets. But arguably, Pandas is the most important. Pandas helps you manipulate and analyze large sets of data without having to learn a specialized data-processing language like R.

Pandas has its limits in that it’s not intended for advanced statistical modelling (in that case, you would want to learn R, or use a Python package like statsmodels). But if you need to do things like process time-series data or perform statistical analysis on a dataset, Pandas has you covered.



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Yes, there are over 700 programming languages.

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The preceding sentence notwithstanding, PyQT, another Python package for building GUIs, is also a strong contender. It provides bindings to (you guessed it) the Qt toolkit, which is also cross-platform. It’s intended for heavier-duty GUI programming than Tkinter. That means that PyQT may be overkill if you’re building an app that has a pretty simple
interface — say, just a window with some buttons and text fields — but it is a good tool if you want to build a complex, multi-dimensional GUI.


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