void close


描述

所述java.io.FilterOutputStream.Close()方法关闭该流并释放与该流相关的所有系统资源。

声明

以下是java.io.FilterOutputStream.Close()方法的声明

public void close()

参数

NA

返回值

此方法不返回任何值。

异常

IOException - 如果发生I / O错误。

实例

以下示例显示了java.io.FilterOutputStream.Close()方法的用法。

package com.tutorialspoint;

import java.io.FileOutputStream;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class FilterOutputStreamDemo {
   public static void main(String[] args) throws Exception {
      OutputStream os = null;
      FilterOutputStream fos = null;

      try {
         // create input streams
         os = new FileOutputStream("C://test.txt");
         fos = new FilterOutputStream(os);

         // releases any system resources associated with the stream
         fos.close();

         // writes byte to the output stream
         fos.write(65);

      } catch(IOException e) {
         // if any I/O error occurs
         System.out.print("Close() is invoked prior to write()");
      } finally {
         // releases any system resources associated with the stream
         if(os!=null)
            os.close();
         if(fos!=null)
            fos.close();
      }
   }
}

让我们编译并运行上面的程序,这将产生以下结果

Close() is invoked prior to write()