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Setting Up Java

kadeem avatar
kadeem
8 diapositives · 273 Views · Jul 10, 2014

Setting Up Java. CS0007: Introduction to Computer Programming. Things you will need. You must have: The Java Runtime Environment (JRE) Includes Java Virtual Machine (JVM) The Java Developer Kit (JDK) Includes the Java Compiler A text editor Optional:

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Setting Up Java
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  1. Setting Up Java CS0007: Introduction to Computer Programming

  2. Things you will need • You must have: • The Java Runtime Environment (JRE) • Includes Java Virtual Machine (JVM) • The Java Developer Kit (JDK) • Includes the Java Compiler • A text editor • Optional: • An Integrated Development Environment (IDE) – a software application that provides comprehensive facilities to computer programmers for software development • Netbeans • Eclipse

  3. The Java Developer Kit • When you install the JDK, you automatically get the JRE • It can be downloaded here: • http://www.oracle.com/technetwork/java/javase/downloads/jdk-6u25-download-346242.html • If you want more development features you can download them here: • http://www.oracle.com/technetwork/java/javase/downloads/index.html • Your best bet is to follow the directions here:’ • http://java.sun.com/new2java/programming/learn/

  4. Text Editors • You can create Java programs with mostly any text editors • Windows: • PSPad • Notepad++ • Linux: • gedit • Unix/Linux: • emacs • vim • nano • Remember to save you java source file as a .java file

  5. Compiling and Running From Command Line • You can compile a java source file from either a Windows or Unix command prompt with the following command: javacYourProgramName.java • This will create a file called “YourProgramName.class”. This contains the Java Byte Code for your program. • You can run a java program from either a Windows or Unix command prompt with the following command: java YourProgramName • Notes: • Your source file should end in “.java” • When you run your Java program just use the name of your source file WITHOUT “.java”

  6. The Command Line • Basic Unix Commands: • ../ - up one in the directory heirarchy • ls(optional path) – list the files in the directory given in the optional path, if no path is given, list the files in the current directory. • cd(optional path) – go to the directory given in the optional path, if no path is given, go to the home directory • Many, many, many more: • http://www.rain.org/~mkummel/unix.html • Windows Command Line Commands: • Same for the above, but instead of ls, use dir • Also many, many, many more: • http://ss64.com/nt/

  7. Integrated Development Environment (IDE) • Using a text editor and compiling from the command line is the most basic way of creating a Java program, but there are tools available to make it easier to create Java programs called IDEs • The two major ones are: • Netbeans • Eclipse • Netbeans is an IDE from Oracle, the current owners of the Java language, and thus, is very easy to use with Java. • If you install Netbeans, it will guide you through installing the JDK • Eclipse is a third-party open-source IDE that is very powerful and popular. • You may need to install the JDK successfully before installing Eclipse.

  8. Netbeans and Eclipse Demo