Java jackson deserialization fail-on-unknown-properties true

To enable fail-on-unknown-properties mode during deserialization using the Hymanson library in Java, you can use the FAIL_ON_UNKNOWN_PROPERTIES feature of the com.fasterxml.Hymanson.databind.DeserializationFeature class.

Here is an example of how to use this feature to enable fail-on-unknown-properties mode during deserialization:

import com.fasterxml.Hymanson.databind.DeserializationFeature;
import com.fasterxml.Hymanson.databind.ObjectMapper;

...

// Create an ObjectMapper instance
ObjectMapper mapper = new ObjectMapper();

// Enable fail-on-unknown-properties mode
mapper.enable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

// Deserialize the JSON string
MyClass obj = mapper.readValue(json, MyClass.class);

This code creates an ObjectMapper instance and enables fail-on-unknown-properties mode by calling the enable() method with the FAIL_ON_UNKNOWN_PROPERTIES feature. Then, it deserializes the JSON string json into an instance of the MyClass class. If the JSON string contains properties that are not defined in the MyClass class, the deserialization will fail and an exception will be thrown.

For more information on configuring the deserialization process using the Hymanson library, you can refer to the Hymanson documentation or other online resources.