Java Java.io.BufferedWriter.write() 方法

描述

java.io.BufferedWriter.write(char[] cbuf, int off, int len)方法将一段字符缓冲区写入编写器。偏移量，从该偏移量开始读取字符，而len是字符缓冲区中该部分的长度。

声明

以下是java.io.BufferedWriter.write(char[] cbuf, int off, int len)方法的声明-

 public void write(char[] cbuf, int off, int len)

参数

cbuf要写入的字符数组
off -偏移关闭以开始读取字符缓冲区
len要写入流的字符数

返回值

此方法不返回任何值。

异常

IOException如果发生I / O错误。

例子

以下示例显示java.io.BufferedWriter.write（char [] cbuf，int off，int len）方法的用法。

 
package com.jc2182;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.StringWriter;

public class BufferedWriterDemo {
   public static void main(String[] args) throws IOException {
      StringWriter sw = null;
      BufferedWriter bw = null;
      
      char[] cbuf = "ABCDEFGHIJKLMN".toCharArray();
      
      try {
         // create string writer
         sw = new StringWriter();
         
         //create buffered writer
         bw = new BufferedWriter(sw);
         
         // write from specified character buffer to stream
         bw.write(cbuf, 2, 5);
         
         // forces out the characters to string writer
         bw.flush();
         
         // string buffer is created
         StringBuffer sb = sw.getBuffer();
         
         //prints the string
         System.out.println(sb);
            
      } catch(IOException e) {
         // if I/O error occurs
         e.printStackTrace();
      } finally {
         // releases any system resources associated with the stream
         if(sw!=null)
            sw.close();
         if(bw!=null)
            bw.close();
      }
   }
}

让我们编译并运行以上程序，这将产生以下结果-

 CDEFG