Which of the Following Is Not True About Static Methods
Its not static across the server or the entire organization. The value of a static variable persists within the context of a single transaction and is reset across transaction boundaries.
Non Static Variable This Cannot Be Referenced From A Static Context New Context Variables Java Programming
To store information that is shared across instances of a class.
. For example if an Apex DML request causes a trigger to fire multiple times the static variables persist across these trigger invocations. As for extension methods extension methods themselves are static. But they are invoked as if they are instance methods.
For this reason the compiler does not allow extension methods to be defined for static classes. Since a static class is not instantiable you would never have an instance of the class to invoke an extension method from.
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