import javax.naming.InitialContext;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class JcaExample {
public static void main(String[] args) {
try {
InitialContext ctx = new InitialContext();
DataSource dataSource = (DataSource) ctx.lookup("java:/comp/env/jdbc/myDataSource");
Connection connection = dataSource.getConnection();
PreparedStatement statement = connection.prepareStatement("SELECT * FROM myTable");
ResultSet resultSet = statement.executeQuery();
while (resultSet.next()) {
System.out.println(resultSet.getString(1));
}
resultSet.close();
statement.close();
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
