Assume Two Threads Share a BankAccount Object with Balance of Zero

question 4

Multiple Choice

Assume two threads share a BankAccount object with balance of zero (0) , and that the BankAccount class provides deposit and withdraw methods as shown below. Thread one deposits $10 ten times and, concurrently, thread two withdraws $10 ten times. If the balance after all thread calls is 0, which statement is definitely true?
Public void deposit(int dollars)
{
Int newBalance = balance + dollars;
System.out.println("depositing") ;
Balance = newBalance;
}
Public void withdraw(int dollars)
{
Int newBalance = balance - dollars;
System.out.println("withdrawing") ;
Balance = newBalance;
}

• A) The calls were interleaved: thread one, thread two, thread one, thread two, …
• B) The first call was to the deposit method.
• C) The last call was to the withdraw method.
• D) Each individual call to the deposit and withdraw methods ran to completion.

---

Definitions:

Indifference Curve

A graph showing different bundles of goods between which a consumer is indifferent, meaning they have no preference for one bundle over another.

Caffeine

A stimulant compound found in coffee, tea, chocolate, and certain soft drinks, known for its effects on reducing fatigue and improving focus.

Synthetic Cubism

A later phase of Cubism, developed around 1912, that emphasized simpler shapes, brighter colors, and mixed media and collage elements.

Precisionism

An American art movement of the 1920s and 1930s. The Precisionists concentrated on portraying manmade environments in a clear and concise manner to express the beauty of perfect and precise machine forms.