java連接DB2檢索一條記錄的java代碼

package com.dnb.globalaccess;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class JdbcConnection {
    /**
     * @param args
     * @throws ClassNotFoundException
     * @throws SQLException
     * @throws IllegalAccessException
     * @throws InstantiationException
     */


    public static void main(String[] args) throws ClassNotFoundException, SQLException, InstantiationException, IllegalAccessException {

        String url = "jdbc:db2://172.16.77.31:50007/ND01";
        String user = "it07";
        String pwd = "111111";
        String sql = "SELECT * FROM CORP_MST FETCH FIRST 1 ROWS ONLY";


        // 1.建立與數據庫的連接：
        Class.forName("com.ibm.db2.jcc.DB2Driver").newInstance();
        Connection conn = DriverManager.getConnection(url, user, pwd);


        // 2.準備SQL
        PreparedStatement ps = conn.prepareStatement(sql);
        ResultSet rs = (ResultSet) ps.executeQuery();

        // 3.輸出
        while (((ResultSet) rs).next()) {
            System.out.println(rs.getString(1));
        }


    }
}