关于OutputStreamWriter的问题

import java.io.*;
public class OutputStreamWriter{
public static void main(String args[]){
try{
OutputStreamWriter osw=new OutputStreamWriter(new FileOutputStream("d:/JAVA/IO/dat.txt"));
osw.write("Mircosoft IBM Sun Apple HP");
System.out.println(osw.getEncoding());
osw.close();
osw=new OutputStreamWriter(new FileOutputStream("d:/JAVA/IO/dat.txt",true),"ISO8859_1");
osw.write("MI HuaWei OPPO VIVO");
System.out.println(osw.getEncoding());
osw.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
想用OutputStreamWriter实现OutputStream的转换，达到直接输出字符串的功能，但是现在各种报错，提示OutputStreamWriter没有OutputStreamWriter(OutputStream out)这种构造方法，还说未给OutputStreamWriter定义getEncoding()方法…可是API上都写了有啊…求指导…谢谢！