ObjectOutputStream
In this chapter you will learn:
Use ObjectOutputStream
The ObjectOutput interface extends the DataOutput
interface and supports object serialization.
The ObjectOutputStream class extends the OutputStream
class and implements the ObjectOutput interface.
It is responsible for writing objects to a stream.
A constructor of this class is
ObjectOutputStream(OutputStream outStream) throws IOException
outStream is the output stream to which serialized objects will be written.
Persist Java objects
In the following we use ObjectOutputStream to persist
Java objects, one string object and one date object, to a file.
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.Date;
/* j a v a 2 s . c om*/
public class Main {
public static void main(String args[]) throws IOException {
FileOutputStream fos = new FileOutputStream("t.tmp");
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeInt(12345);
oos.writeObject("Today");
oos.writeObject(new Date());
oos.close();
}
}
Next chapter...
What you will learn in the next chapter:
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