java.io.FilterOutputStream.write(byte[] b, int off, int len) 方法從指定的字節數組開始到當前輸出流關閉寫入len字節。

聲明

以下是java.io.FilterOutputStream.write(byte[] b, int off, int len)方法的聲明：

public void write(byte[] b, int off, int len)

參數

• b -- 源緩衝區被寫入到流

• off -- 開始在數據偏移

• len -- 字節寫數

返回值

此方法不返回任何值。

異常

• IOException -- 如果發生I/ O錯誤。

例子

下麵的例子顯示java.io.FilterOutputStream.write(byte[] b, int off, int len) 方法用法。

package com.yiibai;

import java.io.FileInputStream;
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;
      FileInputStream fis = null;
      byte[] buffer = {65, 66, 67, 68, 69};
      int i=0;
      char c;
      
      try{
         // create output streams
         os = new FileOutputStream("C://test.txt");
         fos = new FilterOutputStream(os);

         // writes buffer to the output stream
         fos.write(buffer, 2, 3);
                  
         // forces byte contents to written out to the stream
         fos.flush();
         
         // create input streams
         fis = new FileInputStream("C://test.txt");
         
         while((i=fis.read())!=-1)
         {
            // converts integer to the character
            c = (char)i;
            
            // prints
            System.out.println("Character read: "+c);
         }
      }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();
      }
   }
}

讓我們編譯和運行上麵的程序，這將產生以下結果：

Character read: C
Character read: D
Character read: E