public void setCreationDate(java.util.Date creationDate) {
        this.creationDate = creationDate;
    }
<p>
Date on which the identity was created.
</p>

@param creationDate
       Date on which the identity was created.
aws-java-sdk-cognitoidentity/src/main/java/com/amazonaws/services/cognitoidentity/model/DescribeIdentityResult.java