JAVA problem some example simulations will work but the EjsConsole.jar fails
Gary McRobert
1 Posts
I have instaled jdk1.8.0_51 and EJS_5.1 when I attempt to launch the app via the terminal
java -jar ~/Desktop/EJS_5.1/EjsConsole.jar
I get this error
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/colos/ejs/osejs/EjsConsole : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:634) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) at java.net.URLClassLoader.access$000(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:212) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) Could not find the main class: org.colos.ejs.osejs.EjsConsole. Program will exit
IF I luanch one of several examples I downloaded from http://physics.bu.edu/~duffy/NS548_simulations/ITOP_EJS.html
for example java -jar ~/Desktop/ejs_ITOP_Star.jar it works very well
Can anyone tell me what to do to fix this I know very little about JAVA
Re: JAVA problem some example simulations will work but the EjsConsole.jar fails -
Francisco Esquembre
236 Posts
Hi,
I am almost sure that the problem is that you version of Java is not 1.7 or later. The simulations are typically generated to be 1.6 compliant. But EjsS itself requires Java 1.7 or later.
Update to the latest Java (something around version 1.8) and the problem must be solved.
