1.執行緒內只能訪問執行緒外的final變數

2.區域性內部類

　　內部類訪問了方法中的final剋行的變數name

public class LocalInnerClass {  
    private static Test monitor = new Test();     
    private int count = 0; 
    Counter getCounter(final String name) { 
     // A local inner class:
         class LocalCounter implements Counter { 
             
 
public LocalCounter() { 
                 // Local inner class can have a constructor
               System.out.println("LocalCounter()"); 
            } 
             public int next() { 
                 System.out.print(name); // Access local final
                return count++; 
             } 
        } 
         
 
return new LocalCounter(); 
     } 
 }

3.匿名內部類引數必須為final型別

　　匿名內部內訪問了外面的final int dynaimcUserId ,final int dynamicId,final String commentDataUrl

   private void sendRequestWithHttpURLConnectionHaveParam(final int dynaimcUserId ,final int dynamicId,final String commentDataUrl) {
        Thread t = new
 
 Thread(new Runnable() {
            @Override
            public void run() {

                try {
                    OkHttpClient client = new OkHttpClient();
                    RequestBody requestBody = new FormBody.Builder().add("userId",dynaimcUserId+"").add("dynamicId",dynamicId+"").build();//
                    Request request = new Request.Builder().url(commentDataUrl).post(requestBody).build();
                    Response response = client.newCall(request).execute();
                    String responseData = response.body().string();
                    Log.d(TAG, "run: "+responseData);
//                    parseJSONWithJSONObject(responseData);
//                    responseData=new String(responseData.getBytes("iso8859-1"),"utf-8");

                    Message message=Message.obtain(handler,1,2,3,responseData);
                    message.sendToTarget();
                    testJson=responseData;
                    Log.d(TAG, "run:testJson "+testJson);
//                    initView();
                } catch (IOException e) {
                    e.printStackTrace();
                }

            }
        });
        t.start();
        try {
            t.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }