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Guides you through compiling and running three typical Java programs—a console application, a graphical application, and an applet—using the plain JDK, a Java-enabled text editor, and a Java IDE.
Save 35% off the list price* of the related book or multi-format eBook (EPUB + MOBI + PDF) with discount code ARTICLE. This chapter is from the book
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Core Java Volume I--Fundamentals, 11th Edition
This chapter is from the bookThis chapter is from the book Jdk 1.8 Free Download
In this chapter, you will learn how to install the Java Development Kit (JDK) and how to compile and run various types of programs: console programs, graphical applications, and applets. You can run the JDK tools by typing commands in a terminal window. However, many programmers prefer the comfort of an integrated development environment. Unity open download page for mac. You will learn how to use a freely available development environment to compile and run Java programs. Once you have mastered the techniques in this chapter and picked your development tools, you are ready to move on to Chapter 3, where you will begin exploring the Java programming language.
2.1 Installing the Java Development Kit
The most complete and up-to-date versions of the Java Development Kit (JDK) are available from Oracle for Linux, Mac OS, Solaris, and Windows. Versions in various states of development exist for many other platforms, but those versions are licensed and distributed by the vendors of those platforms.
2.1.1 Downloading the JDK
To download the Java Development Kit, visit the web site at www.oracle.com/technetwork/java/javase/downloads and be prepared to decipher an amazing amount of jargon before you can get the software you need. See Table 2.1 for a summary.
Table 2.1 Java Jargon
You already saw the abbreviation JDK for Java Development Kit. Somewhat confusingly, versions 1.2 through 1.4 of the kit were known as the Java SDK (Software Development Kit). You will still find occasional references to the old term. Up to Java 10, there is also a Java Runtime Environment (JRE) that contains only the virtual machine. That is not what you want as a developer. It is intended for end users who have no need for the compiler.
Next, you’ll see the term Java SE everywhere. That is the Java Standard Edition, in contrast to Java EE (Enterprise Edition) and Java ME (Micro Edition).
You might run into the term Java 2 that was coined in 1998 when the marketing folks at Sun felt that a fractional version number increment did not properly communicate the momentous advances of JDK 1.2. However, since they had that insight only after the release, they decided to keep the version number 1.2 for the development kit. Subsequent releases were numbered 1.3, 1.4, and 5.0. The platform, however, was renamed from Java to Java 2. Thus, we had Java 2 Standard Edition Software Development Kit Version 5.0, or J2SE SDK 5.0.
Fortunately, in 2006, the numbering was simplified. The next version of the Java Standard Edition was called Java SE 6, followed by Java SE 7 and Java SE 8.
However, the “internal” version numbers are 1.6.0, 1.7.0, and 1.8.0. This minor madness finally ran its course with Java SE 9, when the version number became 9, and then 9.0.1. (Why not 9.0.0 for the initial version? To keep a modicum of excitement, the version number specification requires that trailing zeroes are dropped for the fleeting interval between a major release and its first security update.)
Prior to Java 9, there were 32-bit and 64-bit versions of the Java Development Kit. The 32-bit versions are no longer developed by Oracle. You need to have a 64-bit operating system to use the Oracle JDK.
With Linux, you have a choice between an RPM file and a .tar.gz file. We recommend the latter—you can simply uncompress it anywhere you like.
Now you know how to pick the right JDK. To summarize:
Accept the license agreement and download the file.
2.1.2 Setting up the JDK
After downloading the JDK, you need to install it and figure out where it was installed—you’ll need that information later.
In this book, the installation directory is denoted as jdk. For example, when referring to the jdk/bin directory, I mean the directory with a name such as /opt/jdk-11.0.4/bin or c:Javajdk-11.0.4bin.
When you install the JDK on Windows or Linux, you need to carry out one additional step: Add the jdk/bin Download to folder on a mac. directory to the executable path—the list of directories that the operating system traverses to locate executable files.
Here is how you test whether you did it right: Start a terminal window. Type the line
and press the Enter key. You should get a display such as this one:
If instead you get a message such as “javac: command not found” or “The name specified is not recognized as an internal or external command, operable program or batch file,” then you need to go back and double-check your installation.
2.1.3 Installing Source Files and Documentation
The library source files are delivered in the JDK as a compressed file lib/src.zip. Internet explorer 32 bit download mac. Unpack that file to get access to the source code. Simply do the following:
The documentation is contained in a compressed file that is separate from the JDK. You can download the documentation from www.oracle.com/technetwork/java/javase/downloads. Follow these steps:
You should also install the Core Java program examples. You can download them from http://horstmann.com/corejava. The programs are packaged into a zip file corejava.zip. Just unzip them into your home directory. They will be located in a directory corejava. If you like, you can do this from the command line:
Related Resources
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JDK 9 & Later
Oracle's OpenJDK JDK binaries for Windows, macOS, and Linux areavailable on release-specific pages of jdk.java.net as
.tar.gz or.zip archives.
As an example, the archives for JDK 13 may be found on jdk.java.net/13 and may be extractedon the command line using
$ tar xvfopenjdk-13*_bin.tar.gz
or
$ unzipopenjdk-13*_bin.zip
depending on the archive type.
JDK 8Debian, Ubuntu,etc.
On the command line, type:
$ sudo apt-get installopenjdk-8-jre
The
openjdk-8-jre package containsjust the Java Runtime Environment. If you want to develop Javaprograms then please install the openjdk-8-jdk package.
Java Jdk 1.8.0 Free DownloadFedora, OracleLinux, Red Hat Enterprise Linux, etc.
On the command line, type:
$ su -c 'yum installjava-1.8.0-openjdk'
The
java-1.8.0-openjdk packagecontains just the Java Runtime Environment. If you want to developJava programs then install the java-1.8.0-openjdk-devel package.
JDK 7![]() Debian, Ubuntu,etc.
On the command line, type:
$ sudo apt-get installopenjdk-7-jre
The
openjdk-7-jre package containsjust the Java Runtime Environment. If you want to develop Javaprograms then install the openjdk-7-jdk package.
Fedora, OracleLinux, Red Hat Enterprise Linux, etc.
On the command line, type:
$ su -c 'yum installjava-1.7.0-openjdk'
The
java-1.7.0-openjdk packagecontains just the Java Runtime Environment. If you want to developJava programs then install the java-1.7.0-openjdk-devel package.
JDK 6Debian, Ubuntu,etc.
On the command line, type:
$ sudo apt-get installopenjdk-6-jre
The
openjdk-6-jre package containsjust the Java Runtime Environment. If you want to develop Javaprograms then install the openjdk-6-jdk package.
Fedora, OracleLinux, Red Hat Enterprise Linux, etc.
On the command line, type:
Download Jdk 1.8 Windows 10$ su -c 'yum installjava-1.6.0-openjdk'
The
java-1.6.0-openjdk packagecontains just the Java Runtime Environment. If you want to developJava programs then install the java-1.6.0-openjdk-devel package.
Mac Install Jdk 8BSD PortJdk 1.8.0 Download Mac
For a list of pointers to packages of the BSD Port forDragonFly BSD, FreeBSD, Mac OS X, NetBSD and OpenBSD, please seethe BSD porting Project's wikipage.
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