java.lang.UnsupportedClassVersionError: com/graphbuilder/curve/Point : Unsupported major.minor version 51.0

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This exception occurs when using an older version of java. Mainly when trying to run a jar compiled with a newer Java version in an older Java version. We can avoid this issue by executing the jar in the same version which it was compiled.

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javax/servlet/ServletException : Unsupported major.minor version 51.0
java.lang.UnsupportedClassVersionError: com/graphbuilder/curve/Point : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2398)
at java.lang.Class.getConstructor0(Class.java:2708)
at org.apache.poi.xdgf.util.ObjectFactory.put(ObjectFactory.java:34)
at org.apache.poi.xdgf.usermodel.section.geometry.GeometryRowFactory.(GeometryRowFactory.java:39)
at org.apache.poi.xdgf.usermodel.section.GeometrySection.(GeometrySection.java:55)
at org.apache.poi.xdgf.usermodel.XDGFSheet.(XDGFSheet.java:77)
at org.apache.poi.xdgf.usermodel.XDGFShape.(XDGFShape.java:113)
at org.apache.poi.xdgf.usermodel.XDGFShape.(XDGFShape.java:125)
at org.apache.poi.xdgf.usermodel.XDGFShape.(XDGFShape.java:107)
at org.apache.poi.xdgf.usermodel.XDGFBaseContents.onDocumentRead(XDGFBaseContents.java:71)
at org.apache.poi.xdgf.usermodel.XDGFMasterContents.onDocumentRead(XDGFMasterContents.java:55)
at org.apache.poi.xdgf.usermodel.XDGFMasters.onDocumentRead(XDGFMasters.java:87)
at org.apache.poi.xdgf.usermodel.XmlVisioDocument.onDocumentRead(XmlVisioDocument.java:106)
at org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:177)
at org.apache.poi.xdgf.usermodel.XmlVisioDocument.(XmlVisioDocument.java:79)
at org.apache.poi.xdgf.extractor.XDGFVisioExtractor.(XDGFVisioExtractor.java:41)
at org.apache.poi.extractor.ExtractorFactory.createExtractor(ExtractorFactory.java:178)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at org.junit.runner.JUnitCore.run(JUnitCore.java:105)
at org.junit.runner.JUnitCore.run(JUnitCore.java:94)
at org.apache.poi.util.OOXMLLite.build(OOXMLLite.java:103)
at org.apache.poi.util.OOXMLLite.main(OOXMLLite.java:86)

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