如何从另一个类获取返回值

Question

'Requests.java'

public Invoice getInvoice() {
return invoice;}

"Invoice.java">

public String getInvoiceID() {
return invoiceID;}

我想获得值的类

payInvoiceId.setText(": " + requests.getInvoice().getInvoiceID());

Answer 1

如果我正确理解您的问题，您需要在Requests.java中实例化Invoice的实例，或者使；getInvoiceID()"method静态，允许您调用requests.getInvoiceID()。可以在没有实例的情况下调用静态方法。(另请参阅数学随机)