JAR文件无法在Mac上打开

I have been trying to open a JAR file on my Mac with no success. It says the JAR file could not be opened and asks me to look for any error messages in my console. Here are the console messages. I suspect the prob is in the first line itself, but I am not from a software background, so don't know if this is enough for anyone who knows Java to tell what the issue is. I did update my software, so I am assuming I have the latest version of Java although I don't know how to 100% ensure that - the Java.com website just told me to update the overall software on my Mac and said that will take care of Java's latest version also. Please help!I have been trying to open a JAR file on my Mac