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Copy pathBufferFileCopy.java
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Copy pathBufferFileCopy.java
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41 lines (33 loc) · 906 Bytes
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package java_base;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
public class BufferFileCopy {
public static void main(String[] args)throws Exception {
// TODO Auto-generated method stub
FileReader fr = new FileReader("src\\java_base\\BufferFileCopy.java");
FileWriter fw = new FileWriter("d:\\BufferFileCopy.java");
BufferedReader br = new BufferedReader(fr);
BufferedWriter bw = new BufferedWriter(fw);
String s;
while((s = br.readLine()) != null)
{
System.out.println(s);
bw.write(s);
bw.newLine();
}
bw.flush();
fr.close();
fw.close();
br.close();
bw.close();
}
}
/*
* BuffereReader 的读取方式是不一样的 通过返回值，而不是通过指针
* 写完后需要flush
* readLine() 会忽略换行，所以写的时候需要bw.newLine();
*
* 文件流 可以使用 字符流 字节流 还可以加上带缓冲利用BufferedReader..
*/