應該是文件路徑寫錯了導致空指針異常，請問這個文件路徑應該怎么寫呀

package com.mycompany.json;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
?*
?* @author kekeson
?*/
public class readjson {
??? public static void main(String[] args) throws JSONException, IOException{
??????? File file=new File(readjson.class.getResource("/www.json").getFile());
??????? String content=FileUtils.readFileToString(file);
??????? JSONObject js=new JSONObject(content);
??????? if(!js.isNull("name")){
??????????? System.out.println(js.getString("name"));
??????? }?????? ?
??????? JSONArray ma=js.getJSONArray("major");
??????? for(int i=0;i<ma.length();i++){
??????????? String m=(String) ma.get(i);
??????????? System.out.println("專業"+(i+1)+m);
??????? }
??? }
}