Jan 20, 2022 · 0 To open a jar file in Windows, you must have the Java Runtime Environment installed. Alternatively, you can use decompression software, such as an unzip utility, to view the files in the jar …

Dec 16, 2009 · Up until recently, I was able to launch/open JNLP files in Firefox using Java web start. Don't know what happened all of a sudden JNLP files stopped launching, a splash screen appears …

.jar files won't open on my PC. I've tried reinstalling Java and messed with the environment variables.

Jan 22, 2018 · Problem: I could not start JAR files just by clicking on them in Windows 10. I was messing around with the "control panel" ... forget it. What I've found out: Start a command line (cmd) as an …

Dec 30, 2022 · I've found a similar one to it here Class has been compiled by a more recent version of the Java Environment, so I'm looking for a way to upgrade/downgrade the version of Java, but I can't …

Sep 22, 2022 · I checked if java was installed using my cmd: Command prompt showing java successfully installed I tried double-clicking it did not work. So I right-clicked it to open with other …

Sep 17, 2012 · I'm new to java and eclipse. I even saw this type of query on this website. But I have applied all those methods and it was also helpful. But when I try to open eclipse, it is not opening: …

Dec 20, 2024 · "Excel cannot open the file '202107-usagereportb.xlsb' because the file format or file extension is not valid." Has anyone ever created binary excel file using Apache POI and Spring boot?

9 It could be related to log4j. Do you have log4j.jar file in the websphere java classpath (as defined in the startup file) as well as the application classpath ? If you do make sure that the log4j.jar file is in the …

I have a JAR file named helloworld.jar. In order to run it, I'm executing the following command in a command-line window: java -jar helloworld.jar This works fine, but how do I execute it with dou...