indexOf（）String类Java

Question

我需要帮助将字符串中的indexOf与字符串数组进行比较，并显示正确的匹配项。

public static void printvehicleMAKE(ServiceAppointment[] services, Scanner input){

    System.out.print("Enter vehicle make: ");

    String make = input.next();
    String model = make.substring(0,3);

    System.out.println(model);

    boolean flag = false;

    System.out.println("Details of all vehicles manufactured by " +make+" : ");
    for (int i=0;i<6;i++) {
        if(model.equalsIgnoreCase(services[i].getvehicleMAKEMODEL())){
            System.out.printf("\n%10s%15s%20s", services[i].getregoNUMBER(),
                    services[i].getbuildYEAR(), services[i].getvehicleMAKEMODEL());
            flag = true;
            }

    }

    if(flag==false)
        System.out.print("No service appointments were found for vehicles " 
                + "made by " + make);   
}

实施例。如果我输入“toyota”或“aston”，我希望它比较字符串的第一个/第二个字符并返回字符串数组中的匹配。

Answer 1

假设

services[i].getvehicleMAKEMODEL())

给出“丰田凯美瑞”中的完整字符串，您必须调整过滤条件。目前，您将"to"与"Toyota Camry"进行比较。这不匹配。所以你应该使用它来代替

model.equalsIgnoreCase(services[i].getvehicleMAKEMODEL().substring(0,3))