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Q101. If a variable is declared as private, where may the variable be accessed?
A private variable may only be accessed within the class in which it is declared.

Q102. What is an object's lock and which object's have locks?
An object's lock is a mechanism that is used by multiple threads to obtain synchronized access to the object. A thread may execute a synchronized method of an object only after it has acquired the object's lock. All objects and classes have locks. A class's lock is acquired on the class's Class object.

Q103. What is the Dictionary class?
The Dictionary class provides the capability to store key-value pairs.

Q104. How are the elements of a BorderLayout organized?
The elements of a BorderLayout are organized at the borders (North, South, East, and West) and the center of a container.