>>5
import java.io.*;

public class TestBinary{
public static void main(String[] args){
try{
int i = 100;
BufferedWriter bw = new BufferedWriter(
new OutputStreamWriter(
new FileOutputStream("a.bin", true)
)
);
bw.write(i);
bw.close();
}catch(Exception e){
e.printStackTrace();
}
}
}