How to get the last insert ID from a table

Question

I want to get the value of the last ID insert in a table. How I can do this?

Answer 1

int keyId = -1;
preparedStatement.executeUpdate();
resultSet = preparedStatement.getGeneratedKeys();
if (resultSet.next()) {
    keyId = rs.getInt(1);
}

https://docs.oracle.com/javase/7/docs/api/java/sql/Statement.html#getGeneratedKeys()

Update: and don't forget to create preparedStatement with the following flag Statement.RETURN_GENERATED_KEYS otherwise it won't work)))