从Java对象计算值?
我有一个Java对象,用于存储项目:
public class PaymentDetailsItem
{
private String name;
private String amount;
private int quantity;
private String currencyID;
public PaymentDetailsItem(String name, String amount, int quantity, String currencyID){
this.name = name;
this.amount = amount;
this.quantity = quantity;
this.currencyID = currencyID;
}
............
}
我使用一个列表来存储几个对象。如何将每个对象存储的总金额汇总到列表中
# 1 楼答案
您可以使用Java 8流API并实现如下内容:
记住为amount属性实现getter