ArrayList in AP Computer Science A

Integers

Sets

Primitives

Arrays

ArrayLists can only access elements in order, while LinkedLists can access elements randomly.

LinkedLists can only access elements in order, while ArrayLists can access elements randomly.

Both ArrayLists and LinkedLists can access elements randomly.

Both ArrayLists and LinkedLists can only access elements in order.

ArrayList stringList = new ArrayList();

ArrayList stringList = new ArrayList();

ArrayList stringList = new ArrayList();

ArrayList stringList = new ArrayList();

To improve runtime performance.

To enable compile-time type checking.

To reduce memory usage.

To allow storage of primitive data types.

The code will compile without errors.

The code will throw a runtime exception.

The code will produce a compile-time error because a String cannot be added to an ArrayList of Integers.

The code will automatically convert the String "30" to an Integer.

import java.util.List;

import java.util.ArrayList;

import java.collections.ArrayList;

import java.lang.ArrayList;

ArrayList list = new ArrayList{};

ArrayList list = new ArrayList();

ArrayList list = new ArrayList[10];

ArrayList list = new List();

When the size of the data collection is known and fixed.

When memory usage is a critical concern.

When the size of the data collection is unknown or may change.

When performance optimization is the primary goal.

Resize the original array to accommodate 10 elements.

Create a new array with a size of 10 and copy the elements from the original array.

Use an ArrayList, as it can dynamically adjust its size without needing to create a new data structure.

It doesn't matter, arrays and ArrayLists are equally efficient in this scenario.

String and Boolean

Integer and Double

int and double

List and Set