public static void main(String args[]) throws Exception {
FileOutputStream fileOutput = new FileOutputStream("your.file.name");
ObjectOutputStream outputStream = new ObjectOutputStream(fileOutput);
Solution solution = new Solution();
outputStream.writeObject(solution);
System.out.println(solution.getMap().size());
fileOutput.close();
outputStream.close();
// loading
FileInputStream fiStream = new FileInputStream("your.file.name");
ObjectInputStream objectStream = new ObjectInputStream(fiStream);
Solution loadedObject = (Solution) objectStream.readObject();
fiStream.close();
objectStream.close();
// Attention!!
System.out.println(loadedObject.size());
}
