替换字符串

package cn.happy.shangji3;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.Reader;import java.io.Writer;public class MyMain {/** * @param args * @throws IOException  */public static void main(String[] args) throws IOException {        Reader reader=new FileReader("f:/Queen.txt");BufferedReader br=new BufferedReader(reader);                String line;        StringBuffer sBuffer=new StringBuffer();        //循环读取并追加字符        while((line=br.readLine())!=null){        sBuffer.append(line);        }        System.out.println("替换前："+sBuffer);        Writer writer=new FileWriter("f:/Queen.txt");        BufferedWriter bw=new BufferedWriter(writer);        //替换后内容        String sbString=sBuffer.toString().replace("{name}", "静静");        sbString=sbString.replace("{type}", "狗狗");        sbString=sbString.replace("{master}", "Queen");        System.out.println("替换后："+sbString);        bw.write(sbString);                 bw.close();        writer.close();        br.close();        reader.close();}}