How do I check if cursor is in the first row?
Category: java.sql, viewed: 606 time(s).
When iterating the scrollable result sets you can check whether you are in the beginning of the result set or not. The isBeforFirst() method check if the position is at the beginning, if yes this method will return true, otherwise it will return false.
package org.kodejava.example.sql;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ScrollableIsBeforeFirstExample {
public static void main(String[] args) throws Exception {
Connection connection = null;
try {
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection("jdbc:mysql://localhost/testdb", "root", "");
Statement statement = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet resultSet = statement.executeQuery("SELECT * FROM products");
//
// Using the isBeforeFirst() method we can check if we are at the beginning
// of the result set.
//
if (resultSet.isBeforeFirst()) {
System.out.println("You are at the beginning of the result set.");
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
if (connection != null) {
connection.close();
}
}
}
}
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