java - 如何在 Java 中循环访问对象值

Question

我想简单地循环遍历对象的所有值，就像我对数组的值所做的那样。我在网上搜索过，但他们似乎总是让事情变得复杂得多，超出了我的理解范围。我的代码非常简单地显示了我想要做的事情。

这是我的代码:

class myCON{

    int modelYear;
    String modelName;


    public myCON(int year, String name){

        modelYear = year;
        modelName = name;

    }


    public static void main(String[] args){

        /*

        ***********************************************************
        int[] arr= {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};

        for ( int i=0; i<arr.length; i++){
            System.out.println(arr[i]);
        }

        System.out.println("end");

        *************************************************************

        */


        myCON myObj1 = new myCON(2005, "Nissan5");
        myCON myObj2 = new myCON(2006, "Nissan6");
        myCON myObj3 = new myCON(2007, "Nissan7");
        myCON myObj4 = new myCON(2008, "Nissan8");
        myCON myObj5 = new myCON(2009, "Nissan9");

        for(int i=1; i<6;i++){
            System.out.println(myObj[i].modelYear + " " + myObj[i].modelName);
        }

        System.out.println(myObj1.modelYear + " " + myObj1.modelName);
        System.out.println(myObj2.modelYear + " " + myObj2.modelName);
        System.out.println(myObj3.modelYear + " " + myObj3.modelName);
        System.out.println(myObj4.modelYear + " " + myObj4.modelName);
        System.out.println(myObj5.modelYear + " " + myObj5.modelName);




    }
}

Answer 1

将它们存储在数组中，然后您可以迭代它们。像这样:

myCON myObj[] = {new myCON(2005, "Nissan5"), new myCON(2006, "Nissan6")}
for(int i=0; i<myObj.length;i++){
   System.out.println(myObj[i].modelYear + " " + myObj[i].modelName);
}