java.lang.NoClassDefFoundError: sun/reflect/ConstructorAccessorImpl
	at sun.misc.Unsafe.defineClass(Native Method)
	at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)
	at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:395)
	at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:94)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:48)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
	at java.lang.Class.newInstance0(Class.java:372)
	at java.lang.Class.newInstance(Class.java:325)
	at MyThread.run(MyThread.java:15)
Caused by: java.lang.ClassNotFoundException: sun.reflect.ConstructorAccessorImpl
	at MyClassLoader.loadClass(MyClassLoader.java:28)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:334)
	... 12 more