By October 2003 In the past two articles you have seen how to customize your Java application so that it looks and feels more like a native Macintosh application when running on Mac OS X without changing the end user experience on other platforms. A combination of runtime properties and coding changes that targeted Mac OS X specific APIs made a big difference to that audience. Recall that Mac OS X is a melding of two worlds. Hard core UNIX programmers can pop open a Terminal window and write their Java code using vi and compile and run it from the command line. There is, however, the more traditional Mac audience that interacts with their computer through a friendly UI that follows Apple Human Interface guidelines. In this article, we look at deploying your Java application. The technical geek audience might be happy with running a class with a main method from the command line but the wider audience expects a double-clickable icon that looks and acts like every other native application.

1. Java 1.8 Download Mac

In this article, we travel from one end of the spectrum to the other to broaden your potential user base. Although you should 'test everywhere', your build machine may not be a Mac. Fortunately, as you will see, a double-clickable Macintosh application is just a directory with some special contents and a name that ends with.app. Even on a Windows machine you should be able to modify your build script to package up a Mac-specific version of your application. Primitive Distributions Because Mac OS X ships with J2SE 1.4.1 and J2SE 1.3.1, you can distribute your application as class files or jar files and - in theory - your customer could run your application from the Terminal application.

We start with these models and quickly move to double-clickable jar files and shell scripts. For this article, use the as the running example. Download and unzip the zip file.

Inside the JavaSoundDemo directory you will find the source files inside of the src subdirectory, a jar file, audio files, and html files that we will not use. Raw Class Files As a developer, you don't think twice about compiling the source files and running the application using the command line. Compiling the eight files in the src directory generates fifty class files. You can then run the sample application from the command line like this. Java JavaSound The Java Sound Demo starts up. We haven't customized the application in any way so the menu appears at the top of the JFrame and not where Macintosh users expect. The application looks like this out of the box.

(Click image to enlarge.) You have done this compile and run step so many times that you hardly think twice about it. Think of the least technical person you know and ask whether they would be likely to follow these steps to run your application if a competing application were easier to install and run. This example demonstrates two separate areas of usability. Once we got the application up and running it looked good and ran fine.

You would not, however, want to distribute an application to an end user this way. You would have to somehow bundle up the fifty class files for easy download and installation. You would then have to provide instructions for running the application using, in the case of Mac OS X, the Terminal application. Jar Files If you are going to have to package up the class files for distribution anyways, you may as well produce a jar file.

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And, if you are going to produce a jar file, it ought to be executable. In the case of the Java Sound Demo, the file JavaSoundDemo.jar is executable.

Because Mac OS X ships with the Jar Launcher application, the end user needs only double click on the jar file and the application will launch. To make the jar file executable, the manifest must include the name of the Main class file.

Unjar JavaSoundDemo.jar with the command jar xvj JavaSoundDemo.jar. Here's the file META-INF/MANIFEST.MF. Manifest-Version: 1.0 Main-Class: JavaSound Created-By: 1.3.0 (Sun Microsystems Inc.) Shell Scripts and Helper Applications For larger or more complicated applications you are likely to have more than one jar file along with resource files. A common strategy for targeting multiple platforms is to include a batch file and a shell script. Choose the non-platform specific download from the homepage. Inside of the bin subdirectory you will find applications for running NetBeans on a variety of platforms.

The shell script runide.sh can be run from the command line like this. Sh runide.sh -jdkhome /Library/Java/Home The NetBeans IDE starts up with this decidedly non-Mac OS X look and feel. (Click image to enlarge.) You could, of course, modify the shell script to modify this look and feel, but the NetBeans developers decided on a different approach. Even though the typical NetBeans audience member is technically competent, there should be a friendlier way to start the IDE. They have created a native Mac OS X application called NetBeansLauncher.

The version of NetBeansLauncher that is included in the generic NetBeans download is a good next step. You will see how the team took it farther in the next section.

On a Mac OS X computer you can double click on the macosxlauncher.dmg file inside of the bin directory. This is a disk image. Drag the NetBeansLauncher from the expanded disk image back into the bin directory. Now double click on the NetBeansLauncher. The ReadMe file that was also in the disk image provides the following information about usage. When launched for the first time, NetBeansLauncher needs to find NetBeans root directory.

First it looks into NetBeansLauncher.app itself. If it does not find NetBeans root directory there user must specify NetBeans root directory manually. For this download, the first time the user starts up the NetBeansLauncher, they need to navigate to the netbeans directory. After that, double clicking on the NetBeansLauncher starts up the NetBeans IDE as if it were any other native Mac OS X application. First Class Mac OS X Applications If you download the Mac OS X disk image from the NetBeans distribution and mount it you may be surprised at the simplicity of what you find.

Unlike the complex structure visible in the other distributions, you will see five files with documentation and a single application. To install, you can move this NetBeansLauncher application anywhere on your hard drive. Double click on it and the NetBeans IDE starts right up. This is the experience that is expected on Mac OS X. The package structure and complexity is hidden from the user and they can't accidentally move a file that renders the IDE unusable. In this section we'll look more closely at the package structure and how to create a Mac OS X application whether or not our build machine is a Mac.

Packages in Mac OS X Consider again the sentence from the NetBeansLauncher instructions that says in order to locate the NetBeans root directory, 'First it looks into NetBeansLauncher.app itself.' This implies that NetBeansLauncher is a directory with the name 'NetBeansLauncher.app'.

In the mounted disk image, either right click or Ctrl-click on the NetBeansLauncher icon and choose to 'Show Package Contents'. (Click image to enlarge.) The structure is the same for all Mac OS X applications. There is a Contents directory with an XML file named info.plist, a text file named PkgInfo, a MacOS directory, and a Resources directory. If you don't have a creator code registered with Apple the PkgInfo text file should contain only the following. If you have a creator code, use it in place of the question marks. Ordinarily the MacOS folder contains a small stub file that launches the Java VM. In this case the NetBeans team has written their own application.

We will look more closely at a property list file in the next section. For now, take a look at the contents of the Resources directory.

You can see the contents of the same netbeans package inside of the Resources subdirectory. This is your key to deploying on Mac OS X. Add in the necessary pieces and then just bundle up your ordinary distribution in the appropriate location. If you have a more flexible build process you should also strip out those pieces that aren't needed for the Mac OS X application such as the Windows executables. If you are interested in digging deeper into the structure of a Mac OS X application, you will find more information in the Apple publication. Creating 'Native' Java Applications on Mac OS X If you develop on Mac OS X you can use the Jar Bundler application to turn jar files into Mac OS X applications. Jar Bundler is distributed with the other developer tools and is located in Developer/Applications/.

Start it, select the 'Classpath and Files' tab and add the file JavaSoundDemo.jar. Select the 'Build Information' tab. For 'Main Class', navigate to the JavaSoundDemo.jar file again and select JavaSound from the drop down list.

This list is populated by any classes in the jar file containing a main method. Accept all of the default settings for the options. You can use the default Java application icon or you can create your own. The icon you see below started as a screen shot of the running Java Sound Demo and was transformed into an icon using the IconComposer application that is also distributed as part of the developer tools. (Click image to enlarge.) Press 'Create Application' and enter the name 'JavaSoundDemo'. A Mac OS X application is created for you.

You can show the package contents of the generated application as before. You can view the property list with Apple's Property List Editor or with any text editor.

It is just an XML file with properties stored as name - value pairs. (Click image to enlarge.) The Java properties indicate the location of the jar file, the name of the Main class, and the version of the JRE to be used. The other properties include a pointer to the icon file and to the Java application stub file that is the native executable. Creating Mac OS X Java Applications on Other Platforms Take a look at the contents of the package that was generated by Jar Bundler on Mac OS X.

On another platform you need to duplicate this structure. To create an application named 'JavaSoundDemo' on, say, a Windows machine, start by creating a directory and naming it JavaSoundDemo.app. Next, create a subdirectory named Contents. Inside of Contents you will need a MacOS directory with the JavaAPplicationStub. You can create the PkgInfo text file and your Info.plist can also be generated by hand and should contain the following XML. You will need a Resources directory with a Java subdirectory into which you put the JavaSoundDemo.jar file.

In other words, with the exception of the JavaApplicationStub and the music.icns file, everything else can be created on another platform. If you use Ant you can easily add a target that takes your jar files, images, and other resources and bundles it up as a Mac OS X application bundle that includes the plist file and Java application stub in the appropriate locations. Every time you create a new build you will automatically have your Mac OS X version. You can also find a growing number of Ant tasks that automate some of the steps outlined in this article. Summary When it comes time to deploy your Java application, consider the ease of use of your target audience. Even developers appreciate the double clickable version of the NetBeans IDE. Creating a Java application that looks and feels like a native application does not require a lot of extra work and can easily be integrated into your build process even if your build machine runs a different operating system.

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Linux Right-click and save it to your desktop. It will create a file ' MW.jnlp.'

Click that file to start the Molecular Workbench software. Alternatives Alternative methods of using Molecular Workbench include:. ». ». » Something you should know about the Molecular Workbench software.

MW runs on Windows, Mac OS X v10.4+, and Linux. The only requirement is that the Java Runtime Environment (JRE) of Java 2 Platform, Standard Edition (J2SE) v1.5 or higher version must be installed. If you are a Windows or Linux user, and have not installed the required Java software, please download or update it from.

The entire Java installation process is Web-based and automatic, similar to installing Macromedia Flash. Mac OS X users can update to the latest Java through the 'Software Update.' Item in the menu under the Apple Logo in the screen menu bar. If you are in a network that prevents you from installing anything (as networks in most schools do), please contact your network administrator. MW is a simulation program that needs considerable horse power of your computer. It is strongly recommended that you run MW when there are no other visible programs or hidden processes (e.g.

A virus scan, a backup job, and so on) running at the same time. If possible, we suggest that you also quit the currently opened programs that use a lot of computer memory. Doing so would help speed up MW and the Java Virtual Machine that supports it. You may find that MW launches slowly initially. That is because the Java Virtual Machine needs to boot before MW can run, which is a process that could take a while depending on your system. But once the Java Virtual Machine is up, MW should run faster.

If you expect to have no Internet connection at all, you should download. Some of our users have reported that MW cannot be installed or launched through Java Web Start (caused by many factors, including Java bugs, their network settings, Apple updates, just to name a few). The alternative is to download the Java executable ' mw.jar' to your disk and double-click on it to run MW. When you download 'mw.jar', it is important that you do not rename the jar file-the file name must be exactly 'mw.jar' (all lower case). If you rename the file, MW will complain about it and will not launch (this is a security measure we built into MW to protect your computer system). Windows users. Install, if you have not.

Click this to save mw.jar on your disk. Do not rename the file-the file name must be exactly 'mw.jar'. Double-click once and only once on mw.jar to launch MW.

On some old machines, the launching process will take a while. To run MW again, just double-click mw.jar. You need not repeat the first two steps when you want to run it again. Mac OS X users You must have OS 10.4 or higher version and Java 1.5 or higher version.

If you do not have the required Java version, please update through the Software Update utility. Once you make sure that you have the required Java software, right-click or CTRL+click this link: and save the file to your disk. Do not rename the file-the file name must be exactly 'mw.jar'. After downloading it, simply double-click once and only once on it to launch MW.

Java 1.8 Download Mac

Linux users You need to install first, then download the file given by the following link:. Double-click on mw.jar to launch MW. If it does not launch, open a x-terminal, change to the directory where it is located, and type in the following command: java -jar mw.jar.

If the java command is not recognized, please also include the path (e.g. /usr/local/jdk1.6/bin, if Java is installed in the /usr/local/jdk1.6 directory).

For more information about troubleshooting, please read the. Download Source Code We recommend that the Eclipse IDE be used to get the source code. You can access it through using SVN. Once you connect to our SVN server, check out trunk/common/java/simulations/mw/. The source code can also be.

When you run it, make sure to set a system property called mw.nosecurity to be true in the launching command. Otherwise, the application will just hang. To protect your users from malicious code that could be plugged into an MW page, however, this property should not be set when you deploy your build.