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package cbt;
import java.net.*;
import java.io.*;
import java.util.*;
public class MultiClassLoader2 extends ClassLoader{
public ClassLoader[] parents;
public ClassLoader[] parents(){
return this.parents;
}
public MultiClassLoader2(ClassLoader... parents){
super(null);
this.parents = parents;
}
public Class findClass(String name) throws ClassNotFoundException{
for(ClassLoader parent: parents){
try{
return parent.loadClass(name);
} catch (ClassNotFoundException e) {
if(e.getMessage() != name) throw e;
}
}
// FIXME: have a logger in Java land
// System.err.println("NOT FOUND: "+name);
return null;
}
public URL findResource(String name){
for(ClassLoader parent: parents){
URL res = parent.getResource(name);
if(res != null) return res;
}
return null;
}
public Enumeration<URL> findResources(String name) throws IOException{
ArrayList<URL> resources = new ArrayList<URL>();
for(ClassLoader parent: parents){
for(URL resource: Collections.list(parent.getResources(name))){
resources.add( resource );
}
}
return Collections.enumeration(resources);
}
public String toString(){
return super.toString() + "(" + Arrays.toString(parents) +")";
}
}
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