How to Replace a Value of a Given Key Path in Dynamic JSON Objects Using Java

Learn how to modify values in dynamic JSON objects with a particular focus on updating values based on key paths in Java.
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Modifying Dynamic JSON Values in Java

Dealing with dynamic JSON structures can be tricky, especially when you need to update values based on specific key paths. Whether you’re handling user configurations, processing API responses, or working with dynamic data in any other context, the ability to modify JSON on-the-fly is a valuable skill. In this guide, we’ll discuss how to replace a value of a given key path in a dynamic JSON object using Java.

Understanding the Problem

Imagine you're facing the following situation: you have a dynamic JSON object received from an external source, and your task is to change specific values within that JSON based on predefined key paths. For example, given the JSON object below:

[[See Video to Reveal this Text or Code Snippet]]

The Solution

Code Explanation

Here is a Java method called updateOrRemoveJsonProperty which replaces or removes the values in the JSON structure based on the given keys:

[[See Video to Reveal this Text or Code Snippet]]

How it Works:

Parameters:

js1: The JSON object or array to modify.

valueNew: The new value to set for that key.

payloadEnum: An enumeration to specify whether to remove or update the key.

targetKey: The specific key to modify in the JSON.

Iterate Over Keys: The method splits the key path into parts and processes each part to traverse the JSON structure.

Update Values: When the final key is reached, it updates the value with put or removes it with remove, based on the payloadEnum.

Conclusion

With the provided method, you can easily update JSON values dynamically in Java based on key-paths that may change over time. This approach is particularly powerful for applications that deal with variable data structures, allowing developers to maintain flexibility and robustness in their code.

In conclusion, whether you are handling vehicle details, errors from a server, or any other kind of dynamic JSON structure, this method can be a helpful tool in your Java programming toolkit.

Feel free to adapt and extend the code and concepts presented here to suit your project needs!