Java读写文件

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class ReadAndWrite {

<wbr>public static void main(String[] args)<br><wbr>{<br><wbr><wbr>ReadAndWrite.WriteFile("F://2.txt",ReadAndWrite.Read("F://1.txt")); 把1的内容读出来,写到2去<br><wbr>}<br><wbr><br><wbr>// 读文件<br><wbr>public static StringBuffer Read(String filePath)<br><wbr>{<br><wbr><wbr>StringBuffer sb=new StringBuffer();<br><wbr><wbr>String str=null;<br><wbr><wbr><wbr> try<br><wbr><wbr><wbr> {<br><wbr><wbr><wbr><wbr> BufferedReader br=new BufferedReader<br><wbr><wbr><wbr><wbr> (new InputStreamReader(new FileInputStream(filePath)));<br><wbr><wbr><wbr><wbr> while((str=br.readLine())!=null)<br><wbr><wbr><wbr><wbr> {<br><wbr><wbr><wbr><wbr><wbr> sb.append(str);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr> }<br><wbr><wbr><wbr><wbr> br.close();<br><wbr><wbr><wbr> }<br><wbr><wbr><wbr> catch(Exception e)<br><wbr><wbr><wbr> {<br><wbr><wbr><wbr><wbr> e.printStackTrace();<br><wbr><wbr><wbr> }<br><wbr><wbr><wbr> return sb;<br><wbr>}<br><wbr><br><wbr>// 写文件<br><wbr>public static void WriteFile(String filePath,StringBuffer text)<br><wbr>{<br><wbr><wbr>try<br><wbr><wbr>{<br><wbr><wbr><wbr>BufferedWriter rw=new BufferedWriter<br><wbr><wbr><wbr>(new OutputStreamWriter(new FileOutputStream(filePath)));<br><wbr><wbr><wbr>rw.write(new String(text));<br><wbr><wbr><wbr>rw.close();<br><wbr><wbr><wbr><wbr><br><wbr><wbr>}<br><wbr><wbr>catch(Exception e)<br><wbr><wbr>{<br><wbr><wbr><wbr>e.printStackTrace();<wbr><wbr><wbr><br><wbr><wbr>}</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr>}</wbr>

}