Question

I am using UUID Random number as a primary key of Object when i save object in Database. So this generated UUID number should be unique. This way i got random number.

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final String UUIDUserToken = UUID.randomUUID().toString()  

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Can this generated number unique for any generated number?

Give me idea.

Answer 1

It may repeat (with very little possibility) ,

Update:

try{
  //try inserting
}catch(){
  //SQL constraint fails
  // regenerate new UUID
  //check in DB before inserting
  //insert now, if its unique, else regenerate
}