How to Use a Partially Filled Array - Comprehensive Guide

Working with arrays in java can be a challenging task. When we’re dealing with a partially filled array, the rules and syntax become a little more complicated. In the following guide, we will take a look at using partially filled arrays in Java and how it can improve our program’s efficiency.

What is a Partially Filled Array?

A partially filled array is an array that has a fixed length but has fewer values stored inside. It is an efficient way of providing more space than is needed. By having more space, operations that require extra space can be done faster.

Why Would You Use a Partially Filled Array?

Partially filled arrays are useful when the programmer needs to access elements that are not stored in a contiguous block of memory. This can be useful when creating certain algorithms. Partially filled arrays can also help make the program more efficient by decreasing the amount of memory used.

How to Create and Use a Partially Filled Array

Creating a partially filled array in Java is easy. All you need to do is declare the size of the array and then store the elements in the correct order. You can also set the values for each element by using the set method.

Once the array is created, you can access the elements by using the get method. This will provide you with the value that is stored in the element at the specified index.


What is the Difference Between a Partially Filled Array and an Empty Array?

A partially filled array has some elements stored in it while an empty array has none. An empty array has to be initialized with values before it can be used.

What is the Maximum Size of a Partially Filled Array?

The size of a partially filled array is dependent on the type of elements it contains. For example, if the elements are of type integer, then the maximum size would be 65535 elements.

How Do I Check if an Array is Partially Filled?

You can check to see if an array is partially filled by using the isPartiallyFilled method. This method will return true if the array is partially filled, false otherwise.

Can I Increase the Size of a Partially Filled Array?

Yes, you can increase the size of a partially filled array by using the resize method. This will increase or decrease the size of the array as needed.

How Can I Access the Last Element in a Partially Filled Array?

If you know the size of the array, you can use the get method to access the last element. This will require you to pass the size of the array minus one as the argument.


Using partially filled arrays in Java can be a great way to improve your program’s efficiency. By understanding how to create and use partially filled arrays, you can make your program run faster and save memory. Hope this guide was helpful in understanding how to use partially filled arrays in Java.


Oracle: Arrays

How To Program With Java: Partially Filled Array

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