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.

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Definitions:

George Kelly

An American psychologist noted for his contribution to personal construct psychology, emphasizing how individuals interpret events and develop cognitive systems.

Static Traits

Personality characteristics or attributes that are believed to be consistent and unchanging over time.

Individual Interpretations

Personal understandings or explanations of situations, events, or concepts, shaped by one's own experiences and beliefs.

Interaction of Traits

The manner in which different personality or biological traits combine and influence individual behavior or responses.