ant -f C:\\Users\\Lu\\Documents\\NetBeansProjects\\JavaFXApplication8 jfx-rebuild
init:
deps-clean:
Updating property file: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\built-clean.properties
Deleting directory C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build
clean:
init:
deps-jar:
Created dir: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build
Updating property file: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\built-jar.properties
Created dir: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\classes
Created dir: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\empty
Created dir: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\generated-sources\ap-source-output
Compiling 1 source file to C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\build\classes
compile:
Created dir: C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\dist
C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\nbproject\jfx-impl.xml:3438: The following error occurred while executing this line:
C:\Users\Lu\Documents\NetBeansProjects\JavaFXApplication8\nbproject\jfx-impl.xml:406: 
java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/ant/Permissions : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
	at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.java:1136)
	at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.java:1307)
	at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1362)
	at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1323)
	at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1076)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:274)
	at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:579)
	at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:237)
	at org.apache.tools.ant.taskdefs.Antlib.execute(Antlib.java:180)
	at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:428)
	at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:277)
	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
	at sun.reflect.GeneratedMethodAccessor53.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
	at org.apache.tools.ant.Task.perform(Task.java:348)
	at org.apache.tools.ant.Target.execute(Target.java:435)
	at org.apache.tools.ant.Target.performTasks(Target.java:456)
	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
	at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
	at org.apache.tools.ant.Project.executeTargets(Project.java:1248)
	at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:441)
	at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)
	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
	at sun.reflect.GeneratedMethodAccessor53.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
	at org.apache.tools.ant.Task.perform(Task.java:348)
	at org.apache.tools.ant.Target.execute(Target.java:435)
	at org.apache.tools.ant.Target.performTasks(Target.java:456)
	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
	at org.apache.tools.ant.Project.executeTarget(Project.java:1364)
	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
	at org.apache.tools.ant.Project.executeTargets(Project.java:1248)
	at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:286)
	at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:555)
	at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
BUILD FAILED (total time: 1 second)