Consider a situation in which we want to store the names of all the students of a class. By similar type, we mean the values of the same datatype. Based on your definition of an empty array, you can make the required changes to the conditions that we have to check for an empty array.Before understanding 3D Arrays in Java we should know what the array is and why is it used in programming languages? Arrays are basically a group of similar type of values which is referred by the same name. We have defined what an empty array is, and based on that definition, we have given ways to check. In this Java Tutorial, we learned how to check if an array is empty in Java. We have defined the function to check if a string array is empty. You can change the type of parameter in the isArrayEmpty() function to suit your requirements. Public static boolean isArrayEmpty(String arr) In this example, we will combine all the above scenarios and define a function that checks if the array is empty. And then use For loop with an If Else statement to check if all the elements are null. In the following example, we will initialize an array of user defined objects of type Color with null objects. To check if an array has all null elements, use a looping technique and check if the elements are all null. Example 3 – Check if Array is Empty using Null Check on Elements And then use equal to comparison operator in an If Else statement to check if array length is zero. In the following example, we will initialize an integer array with empty array. To check if an array has no elements, get length property of the array and check if the length is zero.
Example 2 – Check if Array is Empty using Length Property And then use equal to comparison operator in an If Else statement to check if array is null. In the following example, we will initialize an integer array with null. To check if an array is null, use equal to operator and check if array is equal to the value null. Example 1 – Check if Array is Empty using Null Check
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