In your first approach, you are ... between the data values (in the sense that you store the data and then read it back and construct the object back). In the second approach, Java does this for you behind the scenes. ... Save this answer. ... Show activity on this post. ... Serialization is a process by which we can store the state of an object into any storage medium. We can store the state of the object into a file, into a database table etc. Deserialization is the opposite ... More on stackoverflow.com

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When you need to get data out of your program, out of it's process memory, you need to shape it in a linear string - serialize. It doesn't have to be a text string, you have standard binary serialization formats, or you can roll your own (don't). And on the other side, you deserialize from this linear string into objects stored in (another) program's process memory. You most often can't just raw copy data from process memory because that data is not tagged, in no standard order or format, not linear, not stored in one place, or contains information that would be wrong in other program's memory, like pointers and metadata. More on reddit.com

Please ensure that: Your code is properly formatted as code block - see the sidebar (About on mobile) for instructions You include any and all error messages in full - best also formatted as code block You ask clear questions You demonstrate effort in solving your question/problem - plain posting your assignments is forbidden (and such posts will be removed) as is asking for or giving solutions. If any of the above points is not met, your post can and will be removed without further warning. Code is to be formatted as code block (old reddit/markdown editor: empty line before the code, each code line indented by 4 spaces, new reddit: https://i.imgur.com/EJ7tqek.png ) or linked via an external code hoster, like pastebin.com, github gist, github, bitbucket, gitlab, etc. Please, do not use triple backticks (```) as they will only render properly on new reddit, not on old reddit. Code blocks look like this: public class HelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } } You do not need to repost unless your post has been removed by a moderator. Just use the edit function of reddit to make sure your post complies with the above. If your post has remained in violation of these rules for a prolonged period of time (at least an hour), a moderator may remove it at their discretion. In this case, they will comment with an explanation on why it has been removed, and you will be required to resubmit the entire post following the proper procedures. To potential helpers Please, do not help if any of the above points are not met, rather report the post. We are trying to improve the quality of posts here. In helping people who can't be bothered to comply with the above points, you are doing the community a disservice. I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns. More on reddit.com