import java.io.FileWriter;
import java.io.File;

public class FileWriterDemo {
    public static void main(String[] args)throws Exception {
        File f=new File("number.txt");
        if(!f.exists())
            f.createNewFile();
        FileWriter fw=new FileWriter(f);
        int[] randomAry=new int[10];//假设10个随机数
        for(int i=0;i<randomAry.length;i++){
              randomAry[i]=(int)(Math.random()*100);

            fw.write(new Integer(randomAry[i]).toString()+" ");
        }
        fw.close();
    }
}

------解决方案--------------------

其实对asc ii码来说，想怎么写就怎么写.

Java code

static void t5(){
        OutputStream out = null;
        String str = null;

        
        try{
            out = new FileOutputStream("d:\\test\\1\\11.txt");
            
            str = 123+"";
            out.write(str.getBytes());
            
            out.close();
        }catch(Exception ex){
            ex.printStackTrace();
        }
    }