import java.io.File;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.zip.GZIPOutputStream;
public class Main {
public static void main(String[] args) throws Exception {
User admin = new User();
admin.setId(new Long(1));
User foo = new User();
foo.setId(new Long(2));
ObjectOutputStream oos = new ObjectOutputStream(new GZIPOutputStream(new FileOutputStream(new File("user.dat"))));
oos.writeObject(admin);
oos.writeObject(foo);
oos.flush();
oos.close();
}
}
class User implements Serializable {
private Long id;
public User() {
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("id=").append(id);
return sb.toString();
}
}