java - 如何将构造函数中的ArrayList传递给另一个类

Question

我是 java 新手，正在尝试使用 ArrayList。从 Main 方法中，我想将 ArrayList 传递给另一个类 CustomerAcc。我需要帮助如何传递 >ArrayList 以及如何在此处的类 Customer 代码中获取 ArrayList

import java.io.*;
import java.util.*;
import java.lang.Object;

public class CustomerMain {
    public static void main(String[] args) throws FileNotFoundException {
        ArrayList<String> custName = new ArrayList<String>();
        ArrayList<String> custZip = new ArrayList<String>();
        double count = 0;
        boolean done = false;
        System.out.print("Please enter Customer name or 'X' to exit: ");

        Scanner in = new Scanner(System.in);

        // Gets user input for name and zip code             
        while (in.hasNext() && !done) {
            String checkInput = in.next();

            if (checkInput.equalsIgnoreCase("X")) {
                done = true;
            }
            else {
                custName.add(checkInput);

                System.out.print("Please enter Zip code: ");
                custZip.add(in.next());
                count++;

                System.out.print("\nPlease enter Customer Name or 'X' to `enter code here`exit: ");
            }
        }
        //Sending the user input data to CustomerAcc class
        CustomerAcc custRecord = new CustomerAcc(custName, custZip, count);
    }
}      

CustomerAcc 类:

public class CustomerAcc extends CustomerMain {

   public static void CustomerAcc(String custName, String custZip, int count){

   }
}

Answer 1

如果我很清楚你想访问另一个类中的ArrayList？如果在这种情况下，您可以在声明私有(private) ArrayList 变量时使用 getter 和 setter 技术。

private ArrayList<String> custName = new ArrayList<String>();  
private ArrayList<String> custZip = new ArrayList<String>();  



public void setCustName(ArrayList custName){
    this.custName = custName;
}

public ArrayList geCustName(){
    return custName;
}


public void setCustZip(ArrayList custZip){
    this.custZip = custZip;
}

public ArrayList geCustZip(){
    return custZip;
}