How to Resolve \'Failed to bounce to type\' Errors When Mapping Firebase JSON to Java Objects?

Resolve the "Failed to bounce to type" error while reading Firebase JSON into Java objects.

Firebase JSON and Java Object Mapping

Firebase utilizes Jackson for serialization and deserialization between JSON and Java objects. Multiple mapping approaches are available:

Complete User Loading:

Create a Java class that mirrors the precise properties in the JSON:

@JsonIgnoreProperties(ignoreUnknown=true)
private static class User {
   String handle;
   String name;
   long stackId;
   // ... getters and toString
}

Partial User Loading:

If some JSON properties are not required, annotate the Java class as follows:

@JsonIgnoreProperties({"stackId"})
private static class User {
   String handle;
   String name;
   // ... getters and toString
}

Partial User Saving:

To write custom properties back to Firebase, annotate getter methods in the Java class with @JsonIgnore:

@JsonIgnore
public String getDisplayName() {
    return getName() + " (" + getHandle() + ")";
}

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