java將String和List等寫入到到文件中

import java.io.FileOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;  
  
public class ProduceFakeData_t1 {

	public static void main(String [] args)
	    {
			
			byte[] buff=new byte[]{};
	         
	        try
	        {
	        	List<String> aa=new ArrayList<>();
                aa.add("test1");
                aa.add("test2");
	            buff=aa.toString().getBytes();
	            FileOutputStream out=new FileOutputStream("C:\\Users\\zyw\\Desktop\\test\\t1.txt", true);
	            out.write(buff,0,buff.length);
	            out.close();
	        	}
	        }
	        
	        catch (FileNotFoundException e)
	        {
	            e.printStackTrace();
	        }
	        catch (IOException e)
	        {
	            e.printStackTrace();
	        }
	        
	    }
}