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Static Class. In Java, you have static blocks, static methods, and even static variables. Hence it’s obvious that you can also have static classes. In Java, it is possible to have a class inside another class and this is called a Nested class. The class that encloses the nested class is called the Outer class.
Jun 12, 2012 · Static Variables: These variables are not serialized, So during deserialization static variable value will loaded from the class.(Current value will be loaded.) transient Variables: transient variables are not serialized, so during deserialization those variables will be initialized with corresponding default values (ex: for objects null, int 0).
Aug 31, 2011 · These variables are constants, i.e. private static final whether they're named in all caps or not. The all-caps convention simply makes it more obvious that these variables are meant to be constants, but it isn't required. I've seen . private static final Logger log = Logger.getLogger(MyClass.class);
Oct 30, 2014 · public static - can be accessed from within the class as well as outside the class. private static - can be access from within the class only. Static's are considered to be anti-OO in OOPS. class Dog { public static string X; private static string y; } y can be accessed only from inside Dog via either Dog.y or just y.
Mar 11, 2010 · Hello @Som, Please correct me if I am wrong. But don't you think the statement "but not in the context of Thread where update of one thread to the static variable will reflect the changes immediately to all the threads (in their local cache)." should be "but not in the context of Thread where update of one thread to the static variable will <<NOT>> reflect the changes immediately to all the threads (in their local cache)."
Aug 11, 2011 · There's nothing wrong with static variables per se. It's just the Java syntax that's broken. Each Java class actually defines two structures- a singleton object which encapsulates static variables, and an instance. Defining both in the same source block is pure evil, and results in a code that's hard to read. Scala did that right.
Jan 5, 2017 · A field defining the number of gears for a particular kind of bicycle could be marked as static since conceptually the same number of gears will apply to all instances. The code static int numGears = 6; would create such a static field. Additionally, the keyword final could be added to indicate that the number of gears will never change.
Jun 28, 2015 · The link states that static variables are stored on the heap. But following is an en excerpt from a book by Bill Veners ("Inside the Java Virtual Machine"): The Method Area Inside a Java Virtual Machine instance, information about loaded types is stored in a logical area of memory called the method area.
As of Java 8 , PermGen space is Obsolete. Static Methods,Primitives and Reference Variables are stored in Java MetaSpace. The actual objects reside in the JAVA heap. Since static methods never get out of reference they are never Garbage collected both from MetaSpace and the HEAP.
Mar 30, 2016 · Global and static variables are very similar . The only difference being static variables may be public or private . A public static variable is a global variable in java . Local variables are specific to a method or a class.Their scope is restricted to the specified method or class.
