import java.io.File;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class BigSingleton implements Serializable {

    private static BigSingleton self;

    private byte[] array;

    private BigSingleton(int size) {
        array = new byte[size * 1024 * 1024];
        System.out.println(array.length);
    }

    private BigSingleton() {
        throw new IllegalStateException();
    }

    public static BigSingleton getInstance() {
        if (self == null) {
            File file = new File("BigSingleton.ser");
            try {
                self = new BigSingleton(100);
            } catch (Exception e) {
                e.printStackTrace();
            }
            try {
                file.createNewFile();
                FileOutputStream fis = new FileOutputStream(file);
                ObjectOutputStream oos = new ObjectOutputStream(fis);
                oos.writeObject(self);
                oos.flush();
                oos.reset();
                System.out.println("BigSingleton written to file");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return self;
    }

    public static void main(String[] args) {

    }
}