ResultSet: isBeforeFirst() : ResultSet « java.sql « Java by API

1. Java by API
2. java.sql
3. ResultSet

ResultSet: isBeforeFirst()

 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class Main {
  public static void main(String[] args) throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    Connection 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");

    if (resultSet.isBeforeFirst()) {
      System.out.println("beginning");
    }
    connection.close();
  }
}

   
  

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17.	ResultSet: getBlob(int columnIndex)
18.	ResultSet: getBlob(String colName)
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27.	ResultSet: getObject(int columnIndex)
28.	ResultSet: getObject(String columnLabel)
29.	ResultSet: getRef(int columnIndex)
30.	ResultSet: getRow()
31.	ResultSet: getShort(String columnLabel)
32.	ResultSet: getString(int columnIndex)
33.	ResultSet: getString(String columnLabel)
34.	ResultSet: getTime(int columnIndex)
35.	ResultSet: getTimestamp(int columnIndex)
36.	ResultSet: getType()
37.	ResultSet: getWarnings()
38.	ResultSet: insertRow()
39.	ResultSet: isAfterLast()
40.	ResultSet: isFirst()
41.	ResultSet: last()
42.	ResultSet: moveToInsertRow()
43.	ResultSet: next()
44.	ResultSet: previous()
45.	ResultSet: refreshRow()
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51.	ResultSet: updateString(String columnName, String x)
52.	ResultSet: wasNull()