Which characters may be used as the second character of an identifier, but not s the first character of an identifier?
The digits 0 through 9 may not be used as the first character of an identifier but they may be used after the first character of an identifier
What is an abstract method
An abstract method is a method whose implementation is deferred to a subclass.
What is the SimpleTimeZone class
The SimpleTimeZone class provides support for a Gregorian calendar.
Can try statements be nested
Try statements may be tested.
What are different types of operators in Java
– Uniary ++, –, +, -, |, ~, ()
– Arithmetic *, /, %,+, –
-Shift <<, >>, >>>
– Comparison =, instanceof, = =,!=Bitwise &, ^, |Short Circuit &&, ||
Ternary ?:Assignment =
Via the class name
Code:
Computer.harddisk
Computer.compute()
Are true and false keywords
The values true and false are not keywords.
What is the difference between a static and a non-static inner class
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.
How are the elements of a CardLayout organized
The elements of a CardLayout are stacked, one on top of the other, like a deck of cards.
Can protected or friendly features be accessed from different packages
No when features are friendly or protected they can be accessed from all the
classes in that package but not from classes in another package