Как записать в начало без затирания

public class Solution {

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

    	String name1 = "C:\\Users\\User\\Desktop\\1.txt";
    	String name2 = "C:\\Users\\User\\Desktop\\2.txt";
       	FileInputStream fileInputStream2 = new FileInputStream(name2);
    	byte [] bs2 = new byte[fileInputStream2.available()];
    	fileInputStream2.read(bs2);
    	fileInputStream2.close();
    	FileOutputStream fileOutputStream1 = new FileOutputStream(name1,true);
    	fileOutputStream1.write(bs2);
    	fileOutputStream1.close();
    }
}