事实证明，可以使用Lookup＃unreflect（Method）并暂时使方法可访问（除非在程序初始化期间完成，否则可能会引入小的安全性问题）。
这是Thorben的答案的主要修改方法：
public static void main(String[] args) { Lookup lookup = MethodHandles.lookup(); NestedTestClass ntc = new Program().new NestedTestClass(); try { // Grab method using normal reflection and make it accessible Method pm = NestedTestClass.class.getDeclaredMethod("gimmeTheAnswer"); pm.setAccessible(true); // Now convert reflected method into method handle MethodHandle pmh = lookup.unreflect(pm); System.out.println("reflection:" + pm.invoke(ntc)); // We can now revoke access to original method pm.setAccessible(false); // And yet the method handle still works! System.out.println("handle:" + pmh.invoke(ntc)); // While reflection is now denied again (throws exception) System.out.println("reflection:" + pm.invoke(ntc)); } catch (Throwable e) { e.printStackTrace(); }}
