序列化Serializable

序列化在java中就是把数据变为byte[] ，以便传输数据或保存数据；反序列化是将byte[]转变为java数据；✨

public static void main(String[] args) {
        try(ByteArrayOutputStream buffer=new ByteArrayOutputStream(); ObjectOutputStream output=new ObjectOutputStream(buffer);
        ) {
            output.writeInt(12);
            output.writeObject(Integer.valueOf(100));
            ByteArrayInputStream buffer2=new ByteArrayInputStream(buffer.toByteArray());
            ObjectInputStream input=new ObjectInputStream(buffer2);
            System.out.println(input.readInt());
            System.out.println(input.readObject());
        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }

    }