подскажите пожалуйста где закрывать потоки, Unreachable statement почему-то 
public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
        String firstName=reader.readLine();
        String secondName=reader.readLine();
        String thirdName=reader.readLine();
        FileInputStream fis1=new FileInputStream(firstName);
        FileOutputStream fos1=new FileOutputStream(secondName);
        FileOutputStream fos2=new FileOutputStream(thirdName);
        byte [] firstArray=new byte[firstName.length()];
        int aByte=fis1.read(firstArray);
        while (true) {
            if(fis1.available() /2 !=0) {
                fos1.write(firstArray,0,firstName.length()/2+1);
                fos2.write(firstArray, firstName.length()/2-1, firstName.length()-firstName.length()/2-1);
            }
            else {
                fos1.write(firstArray,0,firstName.length()/2);
                fos2.write(firstArray, firstName.length()/2, firstName.length()/2);
            }
        }
        fis1.close(); // так нельзя
        fos1.close();
        fos2.close();
    }
}