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Check if a String is a Pangram in Java 1. Overview In this tutorial, we will learn to check, if a given string is valid pangram or not using a simple Java program. A pangram is any string that contains all letters of a given alphabet set at least once. 2.… Continue Reading java-string-pangram
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Java String Interview Questions and Answers 1. Introduction The String class is one of the most widely used classes in Java, which prompted language designers to treat it specially. This special behavior makes it one of the hottest topics in Java interviews. In this tutorial, we’ll go through some of… Continue Reading java-string-interview-questions
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Concatenating Strings In Java 1. Introduction Java provides a substantial number of methods and classes dedicated to concatenating Strings. In this tutorial, we’ll dive into several of them as well as outline some common pitfalls and bad practices. 2. StringBuilder First up is the humble StringBuilder. This class provides an array of String-building utilities… Continue Reading java-strings-concatenation
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Convert String to Byte Array and Reverse in Java 1. Introduction We frequently need to convert between String and byte array in Java. In this tutorial, we’ll examine these operations in detail. First, we’ll look at various ways to convert a String to a byte array. Then, we’ll look at similar… Continue Reading java-string-to-byte-array
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Converting Strings to Enums in Java 1. Introduction In this short article, we will see how to convert a String into an enum in Java quickly. 2. Setup We are dealing with core Java so we do not need to add any additional artifacts. We will work with the PizzaDeliveryStatusEnum… Continue Reading java-string-to-enum
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Removing Repeated Characters from a String 1. Overview In this tutorial, we’ll discuss several techniques in Java on how to remove repeated characters from a string. For each technique, we’ll also talk briefly about its time and space complexity. 2. Using distinct Let’s start by removing the duplicates from our… Continue Reading java-remove-repeated-char
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Remove Leading and Trailing Characters from a String 1. Introduction In this short tutorial, we’ll see several ways to remove leading and trailing characters from a String. For the sake of simplicity, we’ll remove zeroes in the examples. With each implementation, we’ll create two methods: one for leading, and one… Continue Reading java-remove-trailing-characters
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CharSequence vs. String in Java 1. Introduction Simply put, CharSequence and String are two different fundamental concepts in Java. In this quick article, we’re going to have a look at the differences between these types and when to use each one. 2. CharSequence CharSequence is an interface that represents a… Continue Reading java-char-sequence-string
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Compact Strings in Java 9 1. Overview Strings in Java are internally represented by a char[] containing the characters of the String. And, every char is made up of 2 bytes because Java internally uses UTF-16. For instance, if a String contains a word in the English language, the leading… Continue Reading java-9-compact-string
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Check If a String Is Numeric in Java 1. Introduction Oftentimes while operating upon Strings, we need to figure out whether a String is a valid number or not. In this tutorial, we’ll explore multiple ways to detect if the given String is numeric, first using plain Java, then regular expressions and finally… Continue Reading java-check-string-number
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