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对不起,这可能是一个简单的决心,但我有麻烦编写代码创建一个对象将使用来自另一个类的构造参数参数在Java中。基本上,我有这个Inv对象有一定的参数,我试图创建一个Warehouse对象,只使用来自Inv对象的特定参数,然后在Warehouse Transaction类中使用它。我可以在Inv对象构造函数中执行if语句吗?任何人,我会稍后将这个对象推入堆栈,但是我无法开发创建第二个对象的逻辑。请帮助,我对此很感兴趣。试图从一个类的构造函数使用一些参数从另一个类的构造函数
public class InvTrans
{
private int InvTransIndex = 0;
private Inv[] transactionArray;
public InvTrans()
{
this.transactionArray = new Inv[100];
}
public static void main(String args[])
{
InvTrans widget = new InvTrans();
Inv order1 = new Inv("March 5th, 2016", "Received", 20, 0001, 2.10, 2.20);
Inv order2 = new Inv("March 6th, 2016", "Received", 100, 0002, 2.10, 2.50);
Inv order3 = new Inv("March 7th, 2016", "Received", 100, 0003, 2.10, 2.50);
Inv order4 = new Inv("March 12th, 2016", "Sold", 140, 0004, 2.40, 2.60);
widget.addLine(order1);
widget.addLine(order2);
widget.addLine(order3);
widget.addLine(order4);
for (int counter = 0; counter < widget.transactionArray.length; counter++)
{
widget.transactionArray[counter].display();
}
}
public void addLine(Inv a)
{
transactionArray[InvTransIndex] = a;
InvTransIndex = InvTransIndex + 1;
}
}
class Inv
{
String date, type;
int units, referenceNumber;
double costPerUnit, pricePerUnit;
Inv(String d, String t, int u, int r, double c, double p) {
this.date = d;
this.type = t;
this.units = u;
this.referenceNumber = r;
this.costPerUnit = c;
this.pricePerUnit = p;
Warehouse warehouseTransaction = new Warehouse(this.date, this.type, this.units, this.costPerUnit);
}
public void display()
{
System.out.println(this.date + "\t" + this.type + "\t" + this.units + "\t\t\t\t\t" + this.referenceNumber + "\t\t\t\t\t" + this.costPerUnit + "\t\t\t" + this.pricePerUnit);
}
}
public class Warehouse
{
String date, type = "";
int units = 0;
double costPerUnit = 0;
Warehouse(String d, String t, int u, double c)
{
date = d;
type = t;
units = u;
costPerUnit = c;
}
}
我不知道你想要完成的任务。通常情况下,您有一个仓库以及存储在仓库中的物品。 –
如果您想在每次创建一个Inv时创建Warehouse对象,那么当前的实现有什么问题?我想让仓库成为一个类变量,以便稍后可以访问它 –
@Toaster我想知道如何创建一个仓库对象,每次创建Inv对象时,Inv的参数都可以满足它。我不知道该怎么去做。 –