Java SE 17 Developer
Validate your expertise in modern Java development with the Oracle Java SE 17 Developer certification, covering advanced OOP, functional programming, and core API enhancements.
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Sample Java SE 17 Developer exam question
Answer this question the same way you would on exam day. No sign-up needed — one random question, three tries to swap it out.
A developer uses the code block to read identifiers from a job table. The SQL is valid and the Connection is alive, but a SQLException is thrown at the cursor loop. Which two facts explain this failure?
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.SQLException;
public class JobPrinter {
public void printJobIds(Connection connection) throws SQLException {
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT job_id FROM job_queue");
statement.close();
while (resultSet.next()) {
System.out.println(resultSet.getLong(1));
}
}
}
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