Question: Can list have different data types in Java?

Can a list store different data types?

No problem, you can store any type inside a list unlike in the “olden days” when other languages had arrays that only wanted one type of data stored in them.

Can list contain different types?

Answer. A list in Python CAN contain different types of data. Each item in the list is separated by a comma and the entire list is enclosed in square brackets [] .

Can an ArrayList have multiple data types?

No, we cannot store multiple datatype in an Array, we can store similar datatype only in an Array.

Can ArrayList hold different objects?

It is more common to create an ArrayList of definite type such as Integer, Double, etc. But there is also a method to create ArrayLists that are capable of holding Objects of multiple Types. … The above list can hold values of any type.

Can tuples have different data types?

Tuples can be a collection of various data types, and unlike simpler data types, conventional methods of getting the type of each element of tuple is not possible.

What is a list used for?

A list is any information displayed or organized in a logical or linear formation. Below is an example of a numerical list, often used to show a series of steps that need to be performed to accomplish something.

IT IS INTERESTING:  Quick Answer: Should I use Java or C for competitive programming?

Can we sort the A list?

We can use the following methods to sort the list: … naturalOrder() method. Using Collections. reverseOrder() method.

Can a list set or tuple have elements of different types?

While the elements of a list (or tuple) can be of any type, no matter how you slice it, a slice of a list is a list.

Is ArrayList a class data type?

The ArrayList class implements a growable array of objects.

ArrayLists cannot hold primitive data types such as int, double, char, and long (they can hold String since String is an object, and wrapper class objects (Double, Integer). Like an array, it contains components that can be accessed using an integer index.

What types of data can a list hold?

A list can contain a series of values. List variables are declared by using brackets [ ] following the variable name. 1 2 3 A = [ ] # This is a blank list variable B = [1, 23, 45, 67] # this list creates an initial list of 4 numbers. C = [2, 4, ‘john’] # lists can contain different variable types.

How do you add multiple values to an ArrayList?

Add Multiple Items to an Java ArrayList

  1. List<Integer> anotherList = Arrays. asList(5, 12, 9, 3, 15, 88); list. …
  2. List<Integer> list = new ArrayList<>(); Collections. addAll(list, 1, 2, 3, 4, 5);
  3. List<Integer> list = new ArrayList<>(); Integer[] otherList = new Integer[] {1, 2, 3, 4, 5}; Collections.