```
@Target(FIELD)
@Retention(RUNTIME)
public @interface JsonString
```
Use this annotation to specify that a declared numeric Java field should map to a JSON string.
By default declared Java numeric fields are stored as JSON numbers. For example:
```
 
class A {
  @Key BigInteger value;
}
 
 
```
can be used for this JSON content:
```
 
{"value" : 12345768901234576890123457689012345768901234576890}
 
 
```
However, if instead the JSON content uses a JSON String to store the value, one needs to use the JsonString annotation. For example:
```
 
class B {
  @Key @JsonString BigInteger value;
}
 
 
```
can be used for this JSON content:
```
 
{"value" : "12345768901234576890123457689012345768901234576890"}
 
 
```
Since:

1.3

Annotation Type JsonString