I have a legacy project that use java 1.7
I wanted to package up a DL4J jar for it.
I set in the pom:
<java.version>1.7</java.version>
It compiles and runs fine in standalone tests however when I use the DL4J jar in the legacy project I get this error:
Caused by: java.lang.UnsupportedClassVersionError: WEB9032: Class org.nd4j.imports.graphmapper.tf.TFGraphMapper has unsupported major or minor version numbers, which are greater than those found in the Java Runtime Environment version 1.7.0_51
at org.glassfish.web.loader.WebappClassLoader.findClass(WebappClassLoader.java:948)
more information:
When I set File → Project Structure → Project SDK : 1.7
I get an error similar to this github issue: ‘nd4j not compatibel with java 7’
With this error in INDArray:
java.lang.UnsupportedClassVersionError: org/nd4j/linalg/api/ndarray/INDArray : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2531)
at java.lang.Class.getMethod0(Class.java:2774)
at java.lang.Class.getMethod(Class.java:1663)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
@craig88 the project for newer versions won’t be supporting java 7. Every JDK vendor provides 8 and 11 as LTS releases. * is already technically EOL. Java 7 much more so. Most of the java ecosystem has moved on at this point.