[已解决]怎么写呀

public class DPXT {
    String checi;
    String site;
    String departtime;
    String arrivetime;
    String passtime;
    public DPXT(String checi,String site,String departtime,String arrivetime,String passtime){
        this.checi = checi;
        this.site = site;
        this.departtime = departtime;
        this.arrivetime = arrivetime;
        this.passtime = passtime;
    }

    @Override
    public String toString() {
        return checi+"  "+site+"  "+departtime+"  "+arrivetime+"  "+passtime;
    }

    public void SC(){
        System.out.println();
    }

    public String getCheci() {
        return checi;
    }

    public String getSite() {
        return site;
    }

    public String getDeparttime() {
        return departtime;
    }

    public String getArrivetime() {
        return arrivetime;
    }

    public String getPasstime() {
        return passtime;
    }

    public static void main(String[] args) {
        QQ();
    }
    public static void QQ(){
        DPXT dpxt1 = new DPXT("T40", "长春-北京", "00:12","12:20","12:08");
        DPXT dpxt2 = new DPXT("T298", "长春-北京", "00:06","10:50","10:44");
        DPXT dpxt3 = new DPXT("Z158", "长春-北京", "12:48","21:06","08:18");
        System.out.println("车次  出发站-到达站  出发时间  到达时间  历时");
        System.out.println(dpxt1);
        System.out.println(dpxt2);
        System.out.println(dpxt3);
        System.out.println("请输入要购买的车次:");
        String s = new Scanner(System.in).nextLine();
        System.out.println(s);
        System.out.println("请输入乘车人");
        String n = new Scanner(System.in).nextLine();
        String m = new Scanner(System.in).nextLine();
        System.out.println(n+","+m);
        if (s.equals(dpxt1.checi)) {
            System.out.println("您已购"+dpxt1.checi+"次列车"+dpxt1.site+dpxt1.departtime+"开"+","+"请"+n+","+m+"尽快换取纸质车票");
        }



    }

}