void close void write(int b) void mark(int readlimit) 描述 所述java.io.FilterInputStream.close()方法关闭此输入流并释放与该流相关的所有系统资源。 声明 以下是public void close()方法的声明 public void close() 参数 NA 返回值 该方法不返回任何值。 异常 IOException - 如果发生I / O错误。 实例 以下示例显示了public void close()方法的用法。 package com.tutorialspoint; import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.FilterInputStream; import java.io.IOException; import java.io.InputStream; public class FilterInputStreamDemo { public static void main(String[] args) throws Exception { InputStream is = null; FilterInputStream fis = null; try { // create input streams is = new FileInputStream("C://test.txt"); fis = new BufferedInputStream(is); // closes and releases the associated system resources fis.close(); // read is called after close() invocation fis.read(); } catch(IOException e) { System.out.print("stream is closed prior ot this call"); } finally { // releases any system resources associated with the stream if(is!=null) is.close(); if(fis!=null) fis.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 ABCDEF 让我们编译并运行上面的程序,这将产生以下结果 stream is closed prior ot this call void write(int b) void mark(int readlimit)