如何检索实现自定义接口的所有类? [英] How can I retrieve all classes that implement a custom interface?

问题描述

我想获取所有实现 IFeature 接口的类.Java Refelctions似乎是一种可能的解决方案，但它并不能达到我想要的方式.

I want to get all classes that implement the IFeature Interface. Java Refelctions appear to be a possible solution, but it doesn't work the way I want it to.

IFeature feature = new Landing();
Class<?>[] cls = Character.class.getInterfaces();
for(Class<?> c : cls ){
    System.out.println(c.toString());
}

输出

运行:

接口java.io.Serializable

interface java.io.Serializable

接口java.lang.Comparable

interface java.lang.Comparable

成功建立(总时间:0秒)

BUILD SUCCESSFUL (total time: 0 seconds)

我的界面...

public interface IFeature {
    public abstract void update(HashMap<QueueIdentifier, Queue<Measurement>> messageMap);
    public abstract List<QueueIdentifier> getQIdList();
    public abstract int getCountSamples();
}

推荐答案

解决方案是apache atn库中的 ClassPathLoader .这是我的代码...

The soluton is the ClassPathLoader from the apache atn library. Here my code...

ClassPathLoader cpl = new ClassPathLoader(".");
    try {
    Hashtable ht = cpl.getClasses();
    Set s = ht.keySet();
    Iterator iter = s.iterator();
    String fullName = null;
        while(iter.hasNext()) {
            try {
            fullName = (String) iter.next();
            Class cls = Class.forName(fullName);
            Class[] interfaces = cls.getInterfaces();
            for(int i = 0; i < interfaces.length; i++) {
            if(interfaces[i].getName().equals("IMyObserver.IFeature")) {

            Object o = cls.newInstance();
            }
        }

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