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26.07.2020The class in which the nested class is defined is known as the Outer Class. Unlike top level classes, Inner classes can be Static. Non-static nested classes are also known as Inner classes.
An instance of an inner class cannot be created without an instance of the outer class. Therefore, an inner class instance can access all of the members of How To Make A Frame On Facebook Java its outer class, without using a reference to the outer class instance. For this reason inner classes can help make programs simple and concise. What are the differences between static and non-static nested classes?
The following are major differences between static nested classes and inner classes. This article is contributed by Chandra Prakash. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Attention reader! Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready.
Writing code in comment? Please use ide. Skip to content. Related Articles. NestedStaticClass printer. Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I'm being told by Eclipse to change the modifier of my string variable to static. I don't understand why.
I think I'm declaring everything right but I'm not sure. Here's my code. The problem is happening on both lines 12 and You are defining frame as an instance variable, but using it as a static variable. There are two solutions to this:. A static variable belongs to the class and does not require an instance.
Generally speaking, you should be avoiding storing things statically as they are hard to modify and test. Rather create an instance of MainClass in your main method and then access your frame inside an instance method. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 9 years, 10 months ago. Active 9 years, 10 months ago. Viewed 7k times.
Improve this question. TomLisankie TomLisankie 3, 5 5 gold badges 24 24 silver badges 30 30 bronze badges. Rather it is telling you that you cannot make a static reference to a non-static variable or method. That's a big difference.
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