NativeMethodAccessorImpl 调用方法声明它可以抛出 IllegalArgumentException
或InvocationTargetException
public Object invoke(Object obj, Object[] args)
throws IllegalArgumentException, InvocationTargetException
{
// We can't inflate methods belonging to vm-anonymous classes because
// that kind of class can't be referred to by name, hence can't be
// found from the generated bytecode.
if (++numInvocations > ReflectionFactory.inflationThreshold()
&& !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) {
MethodAccessorImpl acc = (MethodAccessorImpl)
new MethodAccessorGenerator().
generateMethod(method.getDeclaringClass(),
method.getName(),
method.getParameterTypes(),
method.getReturnType(),
method.getExceptionTypes(),
method.getModifiers());
parent.setDelegate(acc);
}
return invoke0(method, obj, args);
}
private static native Object invoke0(Method m, Object obj, Object[] args);
本机方法在某些情况下会抛出 IllegalArgumentException,例如
Exception in thread "main" java.lang.IllegalArgumentException: argument type mismatch at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
但我没有看到任何抛出已InvocationTargetException
检查异常的选项
可以InvocationTargetException
通过本机方法抛出invoke0
(不声明异常)?
或者InvocationTargetException
由于方法签名向后/未来兼容性而保留?
慕妹3146593
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