But to get the Java code from a class fileyou can either use following: Use a decompiler like Java Decompiler. You can open and view it by any launccher editor like notepad in windows and mac in mac. To open it, either open your Applications folder, then open Jwr and double-click on Terminalor press Command - spacebar to launch Spotlight and type ' Terminal ,' then double-click the search result.Ī class file is in binary format. The Terminal app is in the Utilities folder in Applications. The f option indicates that the JAR file to update is specified on the command line. In this command: The u option indicates that you nac to update an existing JAR file.
The Jar tool provides a u option which you can use to update the contents of an existing JAR file by modifying its manifest or by adding files. To run the file Java Runtime Environment.
To open a jar file in Windows, you must have the Java Runtime Environment installed.Īlternatively, you can use decompression software, such as an unzip utility, to view the files in the jar archive. Make sure your JAR file is an executable file. You can't run JAR files without Java installed on your computer.
