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Use RowMapper To Return List Of String

File: context.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"        xmlns:util="http://www.springframework.org/schema/util"        xmlns:tx="http://www.springframework.org/schema/tx"        xmlns:aop="http://www.springframework.org/schema/aop"        xmlns:lang="http://www.springframework.org/schema/lang"        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd                            http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd                            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd                            http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-2.0.xsd"> <!--     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">         <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>         <property name="url" value="jdbc:oracle:thin:@oracle.devcake.co.uk:1521:INTL"/>         <property name="username" value="sa"/>         <property name="password" value=""/>     </bean> -->     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">     <property name="driverClassName" value="org.hsqldb.jdbcDriver"/>     <property name="url" value="jdbc:hsqldb:mem:."/>     <property name="username" value="sa"/>     <property name="password" value=""/>     </bean> <!--     <bean id="mysqlDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">         <property name="driverClassName" value="com.mysql.jdbc.Driver"/>         <property name="url" value="jdbc:mysql://dbhost-prospring-psql/prospring"/>         <property name="username" value="sa"/>         <property name="password" value=""/>     </bean> -->     <bean id="lobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler">         <property name="nativeJdbcExtractor" ref="nativeJdbcExtractor"/>     </bean>     <bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.CommonsDbcpNativeJdbcExtractor"/>     <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">         <property name="dataSource" ref="dataSource"/>     </bean> </beans> File: Main.java import java.sql.ResultSet; import java.sql.SQLException; import java.util.List; import javax.sql.DataSource; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.RowMapper; class Main {   public static void main(String args[]) throws Exception {     ApplicationContext ac = new ClassPathXmlApplicationContext("context.xml", Main.class);     DataSource dataSource = (DataSource) ac.getBean("dataSource");     // DataSource mysqlDataSource = (DataSource) ac.getBean("mysqlDataSource");     JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);     List<String> names = jdbcTemplate.query("select first_name from t_customer", new RowMapper() {       public Object mapRow(ResultSet resultSet, int i) throws SQLException {         return resultSet.getString(1);       }     });     System.out.println(names);   } }