java.text.SimpledateFormat pas thread

Synchronization

Date formats are not synchronized. It is recommended to create separate format instances for each thread. If multiple threads access a format concurrently, it must be synchronized externally
The above line is mentioned in the JavaDoc of SimpleDateFormat class.Does it mean that we should not create the SimpleDateFormat objects as Static.And If we create it as static, so wherever we are using this object we need to keep it in Synchronised Block.