Jar cmf MainClass.txt ShowTime.jar *.class Now use the following jar command to create the "ShowTime.jar" file: The resulting manifest file contains a single line: Create the file:Įcho "Main-Class: ShowTime" > MainClass.txt Which class contains the "main" function. Instead we will create a more convenient executable JAR file.īefore we make an executable JAR file, we need a manifest file to indicate It is possible to run the class file directly, but that results in a poor userĮxperience. Simple window for displaying the current time:į.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE) į.getContentPane().add(new JLabel(new Date().toString())) īack at the Unix prompt, compile the Java program into a class file: ![]() Get the sample Java code and take a look at the Swing commands that create a The first command creates a folder called "showtime", and the second command Open Terminal and you're now at the Unix prompt.Įnter the following command to verify Java is installed: Using Finder go into "Applications" and then open the "Utilities" folder. (for the truly impatient, you can even run through the wholeĭownload and run the latest JDK installer for This step-by-step tutorial that can be easily completed by a beginner level developer Have successfully completed the tutorial with the sample Java program, modify the steps to The instructions below step you through the process from scratch withĪ sample program called "Show Time", which simply displays the current time. It's simple to turn your Java Swing program (.jar) into a proper Mac OS X application with a This information is for an older version of Mac OS X.įor more current information, visit: Mac Java! Tutorial: How to create a Mac OS X installer for a Java application (.jar) How to create a Mac OS X installer for a Java application (Updated for Mac OS X 10.11 - El Capitan).This was the stupidest thing Oracle could do with Java. Oracle specifically BROKE the Java sandbox, allowing Java to interact directly with computer systems. Why is Java over the Internet now so dangerous? Thank Oracle, who obtained Java when they bought Sun Microsystems. Check up on their reputation and verify they are NOT Trojans. So avoid running mysterious Java apps you know nothing about. Trojan horse Java applications are possible. Just be sure you run Java apps, off the Internet, from reliable developers. NOTE: Running Java applications off the Internet is not typically a problem. But for the sake of simplicity and the ability to reinstate the Java Plug-In whenever you may want to actually use it on the Internet, I'd leave everything else in place. ![]() ![]() There are other Java bits and pieces you could trash. Java now cannot run in them over the Internet, which is where Java is particularly dangerous. I have them in a folder labeled "Internet Plug-ins (disabled)" inside the Library folder.ģ) QUIT and restart all your web browsers. I advise that you store these files somewhere, just in case you want to use them later for some odd purpose. Yes, that includes Apple's own alias file "ugin". A quick and simple way to DISABLE running JAVA over the Internet (if you have Admin privileges):Ģ) Remove from this directory everything listed as 'Java'.
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