Check the console for possible error message in mac

Check the console for possible error message in mac code#

You are meant to just place the JAR file somewhere the Java runtime can find it, and then refer to it in the code you write as you do the exercises in this book. Having said all that, you only get the error if you try to run the JAR like an executable.

Once that is done the JAR file should run from the Finder or the Terminal successfully. This command updates the MANIFEST.MF file within the JAR. First of all download the JAR file from the Princeton website, then run the following command (assuming the JAR file is in your Downloads folder): jar ufe ~/Downloads/algs4.jar TestAlgs4 You can add this parameter using the Terminal. The Main-Class parameter tells the Java runtime which class is the Entry Point, i.e. This error means that the JAR file is missing the 'Main-Class' parameter in its MANIFEST.MF file. However if you try to run the JAR file from the Terminal you get this error: no main manifest attribute, in. Take a screenshot of what you can see and send it to us as an email attachment. Make sure the Console tab is selected and then open or refresh the web page you were having trouble with. The Console app, also known as Console.app, is like a Windows Event Viewer for Mac. Once you've clicked the keyboard shortcuts you'll see the web console window at the bottom of your browser. YouвЂ™ll also find it at Finder > Applications > Utilities > Console. The PID for port 8081 on my machine is 2281.

Take note of the PID associated with the port number. Enter your password when prompted, and look for the port number you are trying to close. You can launch it with Spotlight search by pressing Command+Space, typing Console, and then pressing Enter. Using the terminal, enter the following command to show a list of ports and their PID. Even though the error message says to check the Console I couldn't find anything useful there. To view your Mac system logs, launch the Console app.

Check the console for possible error message in mac