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Articles by Vivek Verma
Page 9 of 9
How to print the maximum occurred character of a string in Java?
A String class can be used to represent character strings; all the string literals in Java programs are implemented as instances of the String Class. In Java, Strings are constants and their values cannot be changed (immutable) once declared.Printing Maximum Occurred Character The maximum occurring character of a string refers to the character that appears multiple times (more than any other character in a string) in a string. To count the maximum occurring character of a string, we have the following approaches - Using an Array Using HashMap Using an Array Using an array is one way to ...
Read MoreHow to print the first character of each word in a String in Java?
This article will discuss how to print the first character of each word in a given string. For example, if we have the string "Hello John", the output should be H J. In Java, the String class is used to represent character strings. All string literals in a Java program are implemented as instances of the String class. Strings in Java are immutable, which means that once a string is created, its value cannot be changed. To print the first character of each word in a String, we have the following approaches - Using split() ...
Read MoreDifference between ArrayList and HashSet in Java
In Java, ArrayList and HashSet are the most important classes of the Collection Framework. Both are used to "store collections of elements", but they are used for different purposes and have different characteristics. ArrayList is an "ordered collection" that allows duplicate elements, while HashSet is an "unordered collection" that does not allow duplicates. ArrayList vs HashSet in Java Here are some key differences between ArrayList and HashSet in Java: Key ArrayList HashSet Implementation ArrayList is the implementation of the List interface. HashSet, on the other hand, is the implementation of a set interface. ...
Read MoreHow can we initialize a boolean array in Java?
Initializing a Boolean Array in Java refers to the process of assigning values (allocating memory) to the Boolean array for the first time. We can initialize an array or any variable - Either at the time of creation. Or, later in the program, using the assignment operator when we are just defining it initially. A Boolean array can be used to store only Boolean values (i.e., either true or false), and the "default value" of each element in a Boolean array is false. In some cases, we may need to initialize all ...
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