what getGeneratedKeys() method do

Question

Hi everyone
I have 3 questions about statement.getGeneratedKeys() in code below?

ResultSet resultSet =statement.getGeneratedKeys();
int generatedkey=0;

if(resultSet.next()){
generatedkey=resultSet.getInt(1);
}

1) can anyone explain me what getGeneratedKeys() method do ?

2) why do we use the next() and getInt(1) methods after it?

3) in getInt(1): why do we put 1 ? can't we put "id"?

Answer 1

This resource will help you to know about getGeneratedkeys() method!

~
https://www.codota.com/code/java/methods/java.sql.Statement/getGeneratedKeys

Might helps

Answer 2

Piyush[21 Dec❤️]
thanks