📅 最后修改于: 2020-09-27 02:01:53 🧑 作者: Mango
Java BufferedOutputStream类用于缓冲输出流。它在内部使用缓冲区存储数据。与将数据直接写入流相比，它提高了效率。因此，它可以提高性能。
要在OutputStream中添加缓冲区，请使用BufferedOutputStream类。让我们看看在OutputStream中添加缓冲区的语法：
OutputStream os= new BufferedOutputStream(new FileOutputStream("D:\\IO Package\\testout.txt"));
让我们看一下Java.io.BufferedOutputStream类的声明：
public class BufferedOutputStream extends FilterOutputStream
| Constructor | Description |
|---|---|
| BufferedOutputStream(OutputStream os) | It creates the new buffered output stream which is used for writing the data to the specified output stream. |
| BufferedOutputStream(OutputStream os, int size) | It creates the new buffered output stream which is used for writing the data to the specified output stream with a specified buffer size. |
| Method | Description |
|---|---|
| void write(int b) | It writes the specified byte to the buffered output stream. |
| void write(byte[] b, int off, int len) | It write the bytes from the specified byte-input stream into a specified byte array, starting with the given offset |
| void flush() | It flushes the buffered output stream. |
在此示例中，我们将文本信息写入连接到FileOutputStream对象的BufferedOutputStream对象中。 flush()刷新一个流的数据并将其发送到另一流。如果您已将一个流与另一个流连接，则需要这样做。
package com.javatpoint;
import java.io.*;
public class BufferedOutputStreamExample{
public static void main(String args[])throws Exception{
FileOutputStream fout=new FileOutputStream("D:\\testout.txt");
BufferedOutputStream bout=new BufferedOutputStream(fout);
String s="Welcome to javaTpoint.";
byte b[]=s.getBytes();
bout.write(b);
bout.flush();
bout.close();
fout.close();
System.out.println("success");
}
}
输出：
Success
testout.txt
Welcome to javaTpoint.