PrintWriter 和 BufferedWriter

PrintWriter 和 BufferedWriter

PrintWriter和BufferedWriter都是继承java.io.Writer，所以很多功能都一样。不过PrintWriter提供println()方法可以写不同平台的换行符，而BufferedWriter可以任意设定缓冲大小。

 

PrintWriter有含有OutputStream、File、Writer的构造方法。BufferedWriter只接受writer。

 

默认是清空文件

PrintWriter pwriter = new PrintWriter(new File("f:/test.txt"););

BufferedWriter bwriter = new BufferedWriter(pwriter);

如果需要不清空文件

PrintWriter pwriter = new PrintWriter(new FileWriter(new File("f:/test.txt"),true));

BufferedWriter bwriter = new BufferedWriter(new FileWriter(new File("f:/test.txt"),true));

 

PrintWriter提供方法为各个平台换行，println()

BufferedWriter的换行则为newLine()

 

基本上这两个类都差不多，用哪个都可以，PrintWriter稍好

 

http://www.cnblogs.com/qingblog/archive/2012/06/14/2549084.html