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@Test     public void test4() throws IOException {         InputStreamReader isr = null;         try {             FileInputStream fis = new FileInputStream("D:\\java.txt");             isr = new InputStreamReader(fis,"UTF-8");             char[] cbuf = new char[5];             int len = 0;             while ((len = isr.read(cbuf))!=-1){                 System.out.print(new String(cbuf,0,len));             }         } catch (IOException e) {             e.printStackTrace();         } finally {             if(isr!=null)                 isr.close();         }     }