FileWriter  方法： writer();

                          flush();

package cn.lideng.demo3;

import java.io.FileWriter;

import java.io.IOException;

public class WriterDemo {

    public static void main(String[] args) throws IOException {

        FileWriter fw=new FileWriter("d:\\b.txt");

        fw.write(100);

        fw.write(101);

        char[] c={'a','b','c','d'};

        fw.write(c);

        fw.write(c,1,2);

        fw.write("qy97威武");

        fw.flush();

        fw.close();

    }

}