Javaでtxtが文字化けして読み取られる場合の解決策

InputStreamReader isr;   
    try {   
        isr = new InputStreamReader(new FileInputStream(fileUrl), "utf-8");   
         BufferedReader read = new BufferedReader(isr);   
           String s=null;   
           List<String> list = new ArrayList<String>();   
           while((s=read.readLine())!=null)   
           {   
               //System.out.println(s);   
               if(s.trim().length()>1){   
               list.add(s.trim());   
               }   
           }   
              
           System.out.println("OK！");   
    } catch (UnsupportedEncodingException e) {   
               e.printStackTrace();   
    } catch (FileNotFoundException e) {   
               e.printStackTrace();   
    } catch (IOException e) {   
               e.printStackTrace();   
    }