我们可以在Java变量中存储传递参数的方法吗

Question

我如何将这个argumetnt的displayPriceMessage方法存储在变量中

//method of displayPriceMethod
 public void displayPriceMessage(String name, String msg, boolean cream, boolean coke)
{
        priceamoutntxt.setText("\n Name: "+Ename.getText().toString()+"\n total : "+priceamoutntxt.getText()+"\n Add Ice-Cream ?"+ cream +"\n Add Coca-Cola ?"+coke+"\n than you ");
}

//  displayPriceMessage argumetnt
displayPriceMessage("ename","",isIceCream, cocaCola);

Answer 1

您可以在FP中执行此操作。 也许您需要一个自定义的功能接口。

DisplayPriceMessage displayPriceMessage =  this::displayPriceMessage;

public void displayPriceMessage(String name, String msg, boolean cream, boolean coke)
{
    priceamoutntxt.setText("\n Name: "+Ename.getText().toString()+"\n total : "+priceamoutntxt.getText()+"\n Add Ice-Cream ?"+ cream +"\n Add Coca-Cola ?"+coke+"\n than you ");
}

创建一个功能接口，该接口具有与displayPriceMessage相似的签名的抽象方法

@FunctionalInterface
interface DisplayPriceMessage {
    void displayPriceMessage(String name, String msg, boolean cream, boolean coke);
}