//与FileInputStream几乎一样，唯一不同的是他可以读取16为的Unicode字符，如汉字等。import java.io.*; public class InputStreamReaderDemo{ public static void main(String[] args)throws IOException  {  try  {   int b;   InputStreamReader isr = new InputStreamReader (new FileInputStream (new File ("D://testfile//input.log")));   System.out.println ("The content of text is:");   while ((b = isr.read()) != -1)//顺序读取文件text里的内容并赋值给整型变量b,直到文件结束为止。   {    System.out.print((char)b);   }   isr.close();  }  catch(FileNotFoundException e)  {   System.out.println(e);  }  catch(IOException e)  {   System.out.println(e);  }  catch(Exception e)  {   System.out.println(e);  } }}

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