关于打印流和输出流的一点疑问

[dodozhu]

看下面两个程序
import java.io.*;
public class FileOutputStream1{
public static void main(String args[])throws Exception{
FileWriter fw = new FileWriter(new File("log.log"));



int line = 0;
for(char c=1;c<65535;c++){
fw.write(c+"");
}
if(line++ > 100){
System.out.println();
line = 0;
}
}
}

2)

import java.io.*;
public class PrintStream1{
public static void main(String args[])throws Exception{
FileOutputStream fos = new FileOutputStream(new File("log.log"));

PrintStream ps = new PrintStream(fos);
if(ps != null){
System.setOut(ps);
}
int line = 0;
for(char c=1;c<65535;c++){
System.out.print(c+"");
}

if(line++ >100){
System.out.println();
line = 0;
}
}
}

这两个程序都可以往log.log文件中写进去65534个字符，区别就是一个是通过打印流打印进去，一个通过输出流写进去。但是效果是一样的。
请问一下在实际应用中，这个“打印”和这个“写”到底有什么区别呢？就是说如果往一个文件里面写东西，是通过打印流来做，还是通过输出流来做呢，因为打印流里面是autoFlush的，所以有的时候比较方便，不用象输出流那样还要套一个bufferedoutputstream啊，呵呵，这点疑问，谢谢大家来解释。

[dodozhu]

日，顶起来，明白人好好讲讲！～

[zdjray]

A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. Two other features are provided as well. Unlike other output streams, a PrintStream never throws an IOException; instead, exceptional situations merely set an internal flag that can be tested via the checkError method. Optionally, a PrintStream can be created so as to flush automatically; this means that the flush method is automatically invoked after a byte array is written, one of the println methods is invoked, or a newline character or byte ('\n') is written.

A file output stream is an output stream for writing data to a File or to a FileDescriptor. Whether or not a file is available or may be created depends upon the underlying platform. Some platforms, in particular, allow a file to be opened for writing by only one FileOutputStream (or other file-writing object) at a time. In such situations the constructors in this class will fail if the file involved is already open.

简单说来就像你说的那样
printstream方便些,fileoutputstream用来写文件,两者都继承自outputstream,假如想方便一些可以用printstream,而有特殊需要则可以用fileoutputstream

[dodozhu]

英文写得东西，不能解释得特别仔细啊，谁再给点其他得深刻建议和意见，顶起来一下，呵呵

[tdy1234]

不懂 关注

[dodozhu]

晕啊，难道真的没什么区别么？

[joejoe1991]

编码方面的区别吧。。 书上讲过 我没注意看。

[dodozhu]

谁再给个详细得解释，晕啊，这个问题这么不受关注

[dodozhu]

快点有人回答啊，我要结帖了