IN THIS CHAPTER • 2.1 Installing the Java Development Kit • 2.2 Using the Command-Line Tools • 2.3 Using an Integrated Development Environment • 2.4 JShell 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. 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 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. NOTE For the remainder of the book, we will drop the “SE” acronym. Mac run android emulator.

When you see “Java 9”, that means “Java SE 9”. 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: • You want the JDK (Java SE Development Kit), not the JRE.

Click the 'Java' option. Click 'Java SE.' Click the 'Download' button next to 'JDK 8 with NetBeans.' Select 'Accept License Agreement' and then click the download link for 'Mac OS X' in the top section. This is the most recent release of the Java SDK with the NetBeans development environment. Java se 6 0 jdk 6 free download - Apple Java for OS X 10.6, Apple Mac OS Update 9.0.4, Corel WordPerfect 6.0-8.0 Import Filter for PageMaker, and many more programs.

• Linux: Pick the.tar.gz version. Accept the license agreement and download the file. NOTE Depending on the constellation of the planets, Oracle may offer you a bundle that contains both the Java Development Kit and the NetBeans integrated development environment. I suggest that you stay away from all bundles and install only the Java Development Kit at this time. If you later decide to use NetBeans, simply download it from. 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.

• Under Windows, launch the setup program. You will be asked where to install the JDK. It is best not to accept a default location with spaces in the path name, such as c: Program Files Java jdk-11.0. Just take out the Program Files part of the path name.

• On the Mac, run the installer. It installs the software into /Library/Java /JavaVirtualMachines/jdk-11.0.

Locate it with the Finder. • On Linux, simply uncompress the.tar.gz file to a location of your choice, such as your home directory or /opt. Or, if you installed from the RPM file, double-check that it is installed in /usr/java/jdk-11.0.

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: Java jdk-11.0.4 bin. When you install the JDK on Windows or Linux, you need to carry out one additional step: Add the jdk /bin directory to the executable path—the list of directories that the operating system traverses to locate executable files. • On Linux, add a line such as the following to the end of your ~/.bashrc or ~/.bash_profile file: export PATH= jdk/bin:$PATH Be sure to use the correct path to the JDK, such as /opt/jdk-11.0.4. • Under Windows 10, type “environment” into the search bar of the Windows Settings, and select “Edit environment variables for your account” (see ). An Environment Variables dialog should appear.

(It may hide behind the Windows Settings dialog. If you can’t find it anywhere, try running sysdm.cpl from the Run dialog that you get by holding down the Windows and R key at the same time, and then select the Advanced tab and click the Environment Variables button.) Locate and select a variable named Path in the User Variables list. Click the Edit button, then the New button, and add an entry with the jdk bin directory (see ). Setting the Path environment variable in Windows 10 Save your settings.