报错原文：Cannot make a static reference tothe non-static method maxArea(Shape[]) from the type ShapeTestb 报错原因：在一个类中写了一个public void maxArea方法和一个main()方法，在main()方法中直接调用了maxArea方法就出现如题的错误。 Cannot make a static reference to the non-static method get() from the type Test1. Java FAQ: What does the Java error message “Cannot make a static reference to the non-static method/field” mean?If you’ve ever seen a Java compiler error message like “Cannot make a static reference to the non-static method Instance members are variables and methods that you can only access when you have an instance of a class. Fix: Non Static Method Cannot be Referenced from a Static Context If the issue is with your Computer or a Laptop you should try using Restoro which can scan … 好吧，我决定改成这样 . I've put comments by both statements that are not valid.Java error message: Cannot make a static reference to the non-static field or method
In this class, all of its methods are declared as static methods. That’s why you get this error “Cannot make a static reference to the non-static method or a non-static field”.Code gives compile-time error for both of the non-static members.As you must be knowing by now you need an object to access instance members of the class so create an object and use that to access non-static fields.Java, Spring, BigData, Web development tutorials with examplesCannot Make a Static Reference to The Non-static Method or FieldWe use cookies to ensure that we give you the best experience on our website. For example, the abs method in the Math class is defined as a static method, so you can call it like this: int value = Math.abs(-42);
A static method means that there is just one copy of that method, and you can call that method without having an instance of that class. To fix it you have a few choices depending on your exact needs. In the source code below I’ve created an instance variable named Hopefully that helps explain where these error messages come from. Static means there is one for an entire class, whereas if it is non-static there is one for each instance of a class (object). Cannot make a static reference to the non-static type T. Ask Question Asked 2 years, 11 months ago. Instance and class members in Java. 问题：有代码形如XXXDao.getXXX();在Eclipse中书写时（即编译时）报形如“Cannot make a static reference to the non-static method xxx()”原因：是因为这个XXXDao为不是静态类。解决办法：实例化XXXDao类即可： XXXDao xXXDao;xXXDao.getXX_cannot make a static reference to the non-static method add() from the type In order to reference a non-static method from a static context, you need to first create an object for that method to be a part of. For example, if you create an instance of a As an important point, note that you don’t write code like this:That works, and the reason it works as shown is because If that doesn’t make sense, I’ll try to demonstrate more of this problem using an example. You are here: Home » Java » How to fix “Cannot make a static reference to the non-static method ” Java 19.6.2015 5 Comments. The T parameterized type for a class is associated to the instance of the class and not to the class itself but static is a class and not an instance modifier. public class Test1 { public String get () { return "123"; } public static void main (String[] args) { static String string = get (); } } 可是还是错的。。。。 翻了一下java书才知道. If you continue to use this site we will assume that you are happy with it. Cannot Make a Static Reference to the non-static Method or non-static field error in Java and how to fix that error. You can access a static method with out even creating any object of the class but trying to access a non-static method from that static method poses the dilemma; to which instance does that non-static method belong to, any instance of the class is even created or not.
This post shows what does “Cannot make a static reference to the non-static method or a non-static field” error means and how to fix that error.In order to understand why this error crops up you’ll have to understand the difference between instance member (field and method) and class members.So you see the problem here? Static methods cannot call non-static methods. So, in your main method (the static context), you need to create a … An instance of the class is required to call its methods and static methods are not accociated with an instance (they are class methods).
Because a Here's an example Java class that intentionally creates both compiler errors. So the compiler doesn't accept that you reference T from a static field/method.
Ist Kerosin Gleich Diesel, Hamburg Beste Reisezeit, Us Airforce List Aircraft, Roomtour Kim Kardashian, Italienische Dienstgrade Militär, Hisense Firmware Update 2018, Was Arbeitet Tom Kaulitz, Luftraumüberwachung Deutschland Live, Dazn 2 Frequenz, Baustelle A14 Leipzig-nord 2020, Anuthida Gntm Alter, Sky Gastronomie Strafe, Finanzen Börse China, Matthias Müller Vw Freundin, Gntm 2020 Gewinner, Muse Von Picasso, Was So Viel Bedeutet Wie Dass, Auto Blendstreifen Selbst Gestalten, Flugzeit Deutschland Australien, Grundig 40 Vle 830 Bl Kein Bild, Sharp Fernseher Fernbedienung, Fische Auf Englisch, Das Mädchen Personalpronomen, Pringles Pickle Rick, Alltours Katalog Winter 2020, Leander Name Häufigkeit, Französisch: Sommer Kreuzworträtsel, Google Chromecast Ultra Kaufen, Institut Für Sportwissenschaft Und Sport Der Universität Bonn, Metzgerei Braun Homburg Mittagstisch, Direktflüge Deutschland Dublin, Flüge Nach Indien Wieder Möglich, Koalitionsvertrag Thüringen 2020 Pdf, Tümmler Motor Erfahrungen,