package javaapplication1;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class JavaApplication1 {
public static void main(String[] args) {
String sFileName = "d://data.txt";
try {
FileOutputStream fos = new FileOutputStream(sFileName);
try (DataOutputStream dos = new DataOutputStream(fos)) {
byte b = 3;
dos.writeByte(b);
}
DataInputStream dis;
try (InputStream is = new FileInputStream(sFileName)) {
dis = new DataInputStream(is);
byte b1 = dis.readByte();
System.out.println(b1);
}
} catch (IOException ioe) {
System.out.println(ioe);
}
}
}
/*
run:
3
*/
