java 如何从另一个类调用方法？
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How do I call a method from another class?
提问by Jen Fisher
I want to print a method that is in another class. How do I do that?
我想打印另一个类中的方法。我怎么做？
Thanks!
谢谢！
The method name I am trying to call is
public void printMenu()...within a class called FoodMenu.
我试图调用的方法名称
public void printMenu()...在一个名为FoodMenu.
回答by Guy
Create an instance of FoodMenuand use it to call printMenu()
创建一个实例FoodMenu并使用它来调用printMenu()
FoodMenu foodMenu = new FoodMenu();
foodMenu.printMenu();
回答by ΦXoc? ? Пepeúpa ツ
You will need an object of the class FoodMenuthen you can call the method
您将需要FoodMenu类的对象， 然后您可以调用该方法
Do someting like:
做一些像：
FoodMenu myFoodMenu = new FoodMenu(); // declaring the object
myFoodMenu .printMenu(); // calling the method.
if your class FoodMenuis in another package, then import it in the class you are going to define the object.
如果您的类FoodMenu在另一个包中，则将其导入您要定义对象的类中。
回答by mo sean
public class FoodMenu{
public void printMenu() {
System.out.println("here is menu sir!");
}
public static void main(String[] arg) {
FoodMenu f = new FoodMenu();
f.printMenu();
}
}
FoodMenuobject created by newkeyword
And with help of object you can call its method f.printMenu();
FoodMenu由new关键字创建的对象 在对象的帮助下，您可以调用它的方法f.printMenu();
