使用 Java 反射仅获取类的公共方法

Get only public methods of a class using Java reflection

提问by Matter Cat

I'm trying to use reflection to grab all public methods that are declared explicitly in the class (so c.getMethods()won't work since it grabs superclass methods too). I can use

我正在尝试使用反射来获取在类中显式声明的所有公共方法（因此c.getMethods()不会工作，因为它也获取超类方法）。我可以用

Method[] allMethods = c.getDeclaredMethods();

to grab methods from just that class, but I only want to use public ones.

从该类中获取方法，但我只想使用公共方法。

At this point, I'm trying to grab modifiers and do certain actions based on this, but for some reason the modifier value shown in the debugger and the modifier value output isn't the same. For example, I have a private getNodemethod that, while the "modifiers" value appears as 2in the debugger, it outputs as "1"when I do System.out.println(c.getModifiers()). Weird. Is there another way to get just public methods, or am I missing something obvious? Thanks for any help!

在这一点上，我正在尝试获取修饰符并基于此执行某些操作，但由于某种原因，调试器中显示的修饰符值和修饰符值输出不同。例如，我有一个私有getNode方法，当“修饰符”值出现2在调试器中时，它输出为"1"当我这样做时System.out.println(c.getModifiers())。奇怪的。有没有另一种方法来获取公共方法，还是我错过了一些明显的东西？谢谢你的帮助！

采纳答案by Sotirios Delimanolis

I don't know how you are using Modifier, but here's how it's meant to be used

我不知道你是如何使用的Modifier，但这是它的用途

Method[] allMethods = Test.class.getDeclaredMethods();
for (Method method : allMethods) {
    if (Modifier.isPublic(method.getModifiers())) {
        System.out.println(method);
        // use the method
    }
}