try-with-resources使用示例

 try (InputStream is = new FileInputStream("test")) {
     is.read();
     ...
 } catch(Exception e) {
     ...
 } finally {
     //no need to add code to close InputStream, its close method will be internally called
     //（无需添加关闭InputStream输入流的代码，其close()方法会自行调用）
 }

转自：https://blog.csdn.net/frgod/article/details/53414813