Java tutorial
import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.ResultSetMetaData; import java.sql.SQLWarning; import java.sql.Statement; public class Main { public static void main(String[] args) throws Exception { Connection conn = getConnection(); conn.setAutoCommit(false); Statement st = conn.createStatement(); st.executeUpdate("create table survey (id int, name VARCHAR(30) );"); String INSERT_RECORD = "insert into survey(id, name) values(?,?)"; PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD); pstmt.setInt(1, 1); pstmt.setString(2, "name"); pstmt.executeUpdate(); // Get warnings on PreparedStatement object SQLWarning warning = pstmt.getWarnings(); while (warning != null) { // Process statement warnings... String message = warning.getMessage(); String sqlState = warning.getSQLState(); int errorCode = warning.getErrorCode(); warning = warning.getNextWarning(); } ResultSet rs = st.executeQuery("SELECT * FROM survey"); outputResultSet(rs); rs.close(); st.close(); conn.close(); } private static void outputResultSet(ResultSet rs) throws Exception { ResultSetMetaData rsMetaData = rs.getMetaData(); int numberOfColumns = rsMetaData.getColumnCount(); for (int i = 1; i < numberOfColumns + 1; i++) { String columnName = rsMetaData.getColumnName(i); System.out.print(columnName + " "); } System.out.println(); System.out.println("----------------------"); while (rs.next()) { for (int i = 1; i < numberOfColumns + 1; i++) { System.out.print(rs.getString(i) + " "); } System.out.println(); } } private static Connection getConnection() throws Exception { Class.forName("org.hsqldb.jdbcDriver"); String url = "jdbc:hsqldb:mem:data/tutorial"; return DriverManager.getConnection(url, "sa", ""); } }