例子

import java.io.*;
public class Main {
    public static void main(String[] args) throws Exception {
        String path = "./story.txt";
        boolean append = false;
        String charset = "gbk";
        FileOutputStream fos = new FileOutputStream(path, append);
        OutputStreamWriter osw = new OutputStreamWriter(fos, charset);
        osw.write("hello world!");
        osw.close();
    }
}