我一直在尝试在我的 Mac 上打开一个 JAR 文件,但无法成功。它显示 JAR 文件无法打开,并要求我查找控制台中的任何错误消息。以下是控制台消息。我怀疑问题就在第一行,但我不是软件背景,因此不知道对于了解 Java 的人来说是否足够告诉问题所在。我已更新软件,因此我假设我拥有最新版本的 Java,尽管我不知道如何 100% 确保 - Java.com 网站只告诉我更新 Mac 上的整个软件,并表示将处理 Java 的最新版本。请帮忙!
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] Exception in thread "main"
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] java.lang.UnsupportedClassVersionError: Bad version number in .class file
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.lang.ClassLoader.defineClass1(Native Method)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.security.AccessController.doPrivileged(Native Method)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.lang.ClassLoader.loadClass(ClassLoader.java:316)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:280)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
5/26/09 7:48:01 AM [0x0-0x72072].com.apple.JarLauncher[1079] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)