public void setReleaseDate(java.util.Date releaseDate) {
        this.releaseDate = releaseDate;
    }
<p>
The date the patch was released.
</p>

@param releaseDate
       The date the patch was released.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/Patch.java