java - 如何添加到类类型的数组列表

Question

好的，这就是我所拥有的

public class Register {

    public String propertyID;
    public String PPSNumber;

    Register(String aPropertyID, String aPPSNumber) {
        propertyID = aPropertyID;
        PPSNumber = aPPSNumber;
    }

    public void setPPSNumber(String aPPSNumber) {
        PPSNumber = aPPSNumber;
    }

    public String getPPSNumber() {
        return PPSNumber;
    }

    public String getPropertyID() {
        return propertyID;
    }
}

然后我有这个

public static ArrayList<Register> registers = new ArrayList<Register>();

public static void main(String[] args) {

    String userInput1 = "", userInput2 = "", userInput3 = "";
    userInput1 = JOptionPane.showInputDialog("Enter your PPSNumber");
    userInput2 = JOptionPane.showInputDialog("Enter your propID");

    registers.add("number", "id");
}

我不明白为什么它不允许我添加到 ArrayList。有什么方法可以将类类型添加到 ArrayList 中吗？

Answer 1

试试这个:

registers.add(new Register("number","id"));

编辑1: 要回答您的问题，您可以创建一个单独的“寄存器”并使用 getter :

Register aRegister = new Register("number","id");
registers.add(aRegister);
System.out.println(aRegister.getPropertyID()+" "+ aRegister.getPPSNumber());