When two threads access the same ArrayList object what is the outcome of the program?
A. Both are able to access the object
B. ConcurrentModificationException is thrown
C. One thread is able to access the object and second thread gets Null Pointer exception
D. One thread is able to access the object and second thread will wait till control is passed to the second one
Answer: Option B
This Question Belongs to Java Program >> Collections Framework In Java
What is the purpose of the Java Collections Framework?
A. To provide a unified architecture for representing and manipulating collections
B. To provide a way to create arrays
C. To define primitive data types
D. To handle exceptions
A. `Collection`
B. `Map`
C. `Set`
D. `List`
What is the primary difference between a `List` and a `Set` in the Java Collections Framework?
A. A `Set` allows duplicate elements, while a `List` does not
B. A `List` is unmodifiable, while a `Set` is modifiable
C. A `List` allows duplicate elements, while a `Set` does not
D. A `Set` is indexed, while a `List` is not
Which class is typically used to implement a `List` in the Java Collections Framework?
A. `HashMap`
B. `ArrayList`
C. `LinkedList`
D. None of These
Join The Discussion