What is the default size of vector ArrayList Hashtable HashMap HashSet in Java?

I know that the default capacity of Vector class in java is 10 and similarly ArrayList also have it’s default capacity 10.

What is the default capacity of ArrayList?

10
Whenever an instance of ArrayList in Java is created then by default the capacity of Arraylist is 10. Since ArrayList is a growable array, it automatically resizes itself whenever a number of elements in ArrayList grow beyond a threshold.

What is default capacity of Hashtable?

11
The initial default capacity of Hashtable class is 11 whereas loadFactor is 0.75.

What is default capacity of HashSet?

16
HashSet(): This constructor is used to build an empty HashSet object in which the default initial capacity is 16 and the default load factor is 0.75.

What is default Vector capacity?

Vector(): Creates a default vector of the initial capacity is 10.

What is default size of set?

Constructs a new, empty set; the backing HashMap instance has default initial capacity (16) and load factor (0.75).

What is default vector capacity?

What is the default size of vector?

0
The default value of a vector is 0.

What is the default size of ArrayList and HashMap in Java?

The default size of ArrayList in java is 10.

What is initial capacity and load factor in HashSet?

What is the default size of ArrayList and HashMap?

What is the initial size of default vector?

Default initial capacity of Vector is 10. java. util. Vector default constructor defines size of 10.

What is the default size of HashMap in Java?

Likewise, what is the default size of HashMap in Java? Initial Capacity Of HashMap : The default initial capacity of the HashMap is 24 i.e 16. The capacity of the HashMap is doubled each time it reaches the threshold. Similarly, what does MAP return if key not found Java?

What is the default capacity of ArrayList in Java?

When you create an object of ArrayList in Java without specifying a capacity, it is created with a default capacity which is 10. Since ArrayList is a growable array, it automatically resizes when the size (number of elements in array list) grows beyond a threshold.

What is the default size of 10 objects in an array?

Default size of 10 objects means that we allocate 10 pointers (40 or 80 bytes) for underlying array at creation and fill them in with nulls. An empty array (filled with nulls) occupy lot of memory . Lazy initialization postpones this memory consumption till moment you will actually use the array list.

What is the difference between hashconstruct and HashSet in Java?

Constructs a new, empty hashtable with a default initial capacity (11) and load factor (0.75). Hashset: Constructs a new, empty set; the backing HashMap instance has default initial capacity (16) and load factor (0.75).