fork download
copy 
  1. import sun.misc.Unsafe;
  2. import java.lang.invoke.MethodHandle;
  3. import java.lang.invoke.MethodHandles;
  4. import java.lang.invoke.MethodType;
  5. import java.lang.reflect.Field;
  6.  
  7. class Test {
  8.  
  9.   public static void main(String[] args) throws Throwable {
  10.     Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
  11.     theUnsafe.setAccessible(true);
  12.     Unsafe unsafe = (Unsafe) theUnsafe.get(null);
  13.  
  14.     Field impl_lookup = MethodHandles.Lookup.class.getDeclaredField("IMPL_LOOKUP");
  15.     MethodHandles.Lookup lookup = (MethodHandles.Lookup) unsafe.getObject(unsafe.staticFieldBase(impl_lookup), unsafe.staticFieldOffset(impl_lookup));
  16.  
  17.     MethodHandle constructor = lookup.findConstructor(Void.class, MethodType.methodType(void.class));
  18.     Void v = (Void)constructor.invokeExact();
  19.  
  20.     System.out.println(v);
  21.   }
  22. }
  23.  
Success #stdin #stdout 0.09s 33636KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
java.lang.Void@65b54208
https://ideone.com/XvH8TT
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!