使用反射来调用静态方法时的NullPointer

Question

我正在尝试调用Class中声明的私有静态方法。

Class bridgeClass = Class.forName("MyClassName");
Method method = bridgeClass .getDeclaredMethod("isResourcePotentiallyOnPath" , new Class[]{String.class, List.class});
method.setAccessible(true);

然后，

Object [] args = new Object[2];
args[0] = "SomeResource"
args[1] = null; //by default i want to pass in null here

boolean returnValue = (Boolean)method.invoke(null, args);

我看到该方法不是null，而是method.invoke在堆栈的某处导致空指针

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)

我做错了什么？

由于

编辑：

以下是我尝试调用的方法

private static boolean isResourcePotentiallyOnPath(String aFullyQualifiedName, List aClassPath){
        System.out.println("yahoo.. reached here finally");
        Jsr199FileManager fileManager = Jsr199FileManager.getInstance(jvmHomeForJars, aClassPath);
        return fileManager.isResourcePotentiallyOnPath(aFullyQualifiedName);
    }