Core Java Interviewfragen und Antworten
Question: What is the difference between a static and a non-static inner class?Answer: A non-static inner class may have object instances that are associated with instances of the class's outer class. A static inner class does not have any object instances. |
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Am hilfreichsten laut Nutzern:
- How could Java classes direct program messages to the system console, but error messages, say to a file?
- What are the differences between an interface and an abstract class?
- Why would you use a synchronized block vs. synchronized method?
- How can you force garbage collection?
- What are the differences between the methods sleep() and wait()?