import java.lang.reflect.Field; import sun.misc.Unsafe; /** The classic way every library gets an Unsafe: read the private static field "theUnsafe". */ final class UnsafeAccess { private UnsafeAccess() {} static Unsafe get() { try { Field f = Unsafe.class.getDeclaredField("theUnsafe"); f.setAccessible(true); return (Unsafe) f.get(null); } catch (ReflectiveOperationException e) { throw new IllegalStateException(e); } } }