void close void write(int b) void mark(int readAheadLimit) 描述 所述java.io.BufferedInputStream.Close()方法关闭该流并释放与它相关联的所有系统资源。关闭流后,read(),ready(),mark(),reset()或skip()调用将抛出IOException。 声明 Following is the declaration for java.io.BufferedReader.close() method. public void close() 参数 NA 返回值 该方法没有返回值 异常 IOException − 如果发生I / O错误。 实例 以下示例显示了java.io.BufferedReader.close()方法的用法。 package com.tutorialspoint; import java.io.BufferedReader; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class BufferedReaderDemo { public static void main(String[] args) throws Exception { InputStream is = null; InputStreamReader isr = null; BufferedReader br = null; try { // open input stream test.txt for reading purpose. is = new FileInputStream("c:/test.txt"); // create new input stream reader isr = new InputStreamReader(is); // create new buffered reader br = new BufferedReader(isr); // releases any system resources associated with reader br.close(); // creates error br.read(); } catch(IOException e) { // IO error System.out.println("The buffered reader is closed"); } finally { // releases any system resources associated if(is!=null) is.close(); if(isr!=null) isr.close(); if(br!=null) br.close(); } } } 假设我们有一个文本文件c:/test.txt,它具有以下内容。此文件将用作示例程序的输入 ABCDEFGHIJKLMNOPQRSTUVWXYZ 让我们编译并运行上面的程序,这将产生以下结果 IOException: The buffered reader is closed void write(int b) void mark(int readAheadLimit)