Java - Creating and Using Jar Files. смотреть онлайн

What is in a Java JAR file?
A Java Archive, or JAR file, contains all of the various components that make up a self-contained, executable Java application, deployable Java applet or, most commonly, a Java library to which any Java Runtime Environment can link.

Steps for Creating Jar File in NetBeans:
File → New Project → Categories: Java & Projects: Java Class Library → Next→ Give Project Name & Project Location →Click on Finish.
To use this Jar File you can create another Java Application and add this Library as a Project.

What is a .class file in Java?
A Java class file is a file containing Java bytecode and having .class extension that can be executed by JVM. A Java class file is created by a Java compiler from .java files as a result of successful compilation.

What is Byte Code?
Byte Code can be defined as an intermediate code generated by the compiler after the compilation of source code(JAVA Program). This intermediate code makes Java a platform-independent language.

Table of Content:
0:00 Introduction
2:48 Steps for creating Jar File(Error: Use Java Class Library instead of Java Application)
4:35 Steps for using this jar in Program
10:42 What is .class file & Byte Code?

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