Question

java关于类的数组输出值问题

为什么两次的数组的输出值不同？

Answer 1

因为你的abc是同一个对象，导致a1数组里存的其实都是一个对象，所以循环结束之后其实a1数组存的都一样

Answer 2

没注意，你要输出x对象的值啊你重写的是ACAR的toString（）输出时用System.out.println(a[i].xToString());加个 xToString 方法好了 abstract class ACar { int ModelsNum; // 车型编号 String Carname; // 车型名称 int NumberOfPeople; // 载客量 int load; // 载重量 int price; // 每天单价 int money; // 支付总金额 // String[] x = {Carname}; Object[] x = { ModelsNum, Carname, NumberOfPeople, load, price }; public ACar(int new_ModelsNum, String new_Carname, int new_NumberofPeople, int new_load) { this.ModelsNum = new_ModelsNum; this.Carname = new_Carname; this.NumberOfPeople = new_NumberofPeople; this.load = new_load; } public abstract void run(); public String xToString() { return Arrays.toString(x); } @Override public String toString() { return "ACar [ModelsNum=" + ModelsNum + ", Carname=" + Carname + ", NumberOfPeople=" + NumberOfPeople + ", load=" + load + ", price=" + price + ", money=" + money + ", x=" + Arrays.toString(x) + "]"; }}