清华大学：JAVA教学课件：10-1

import java.io.*;
public class FileOutputStreamTest {
public static void main(String args[]) {
try {
FileOutputStream out = new FileOutputStream("myFile.dat");
out.write('H');
out.write(69);
out.write(76);
out.write('L');
out.write('O');
out.write('!');
out.close();
} catch (FileNotFoundException e) {
System.out.println("Error,Cannot open file for writing.");
} catch (IOException e) {
System.out.println("Error,Cannot write to file.");
}
}
}