more and more
Convert a Comma Separated String to a List in Java 1. Overview In this tutorial, we’ll look at converting a comma-separated String into a List of strings. Additionally, we’ll transform a comma-separated String of integers to a List of Integers. 2. Dependencies A few of the methods that we’ll use… Continue Reading java-string-with-separator-to-list
getdocs
Quick Guide to the Java StringTokenizer 1. Overview In this quick article, we’ll explore a fundamental class in Java – the StringTokenizer. 2. StringTokenizer The StringTokenizer class helps us split Strings into multiple tokens. StreamTokenizer provides similar functionality but the tokenization method is much simpler than the one used by… Continue Reading java-stringtokenizer
getdocs
Count Occurrences of a Char in a String 1. Overview There are many ways to count the number of occurrences of a char in a String in Java. In this quick article, we’ll focus on a few examples of how to count characters, first, with the core Java library and… Continue Reading java-count-chars
getdocs
Java InputStream to String 1. Overview In this tutorial we’ll look at how to convert an InputStream to a String, using Guava, the Apache Commons IO library, and plain Java. This article is part of the “Java – Back to Basic” series here on Baeldung. 2. Converting with Guava Let’s… Continue Reading convert-input-stream-to-string
getdocs
Java 11 String API Additions 1. Introduction Java 11 added few useful APIs to the commonly used String class. In this tutorial, we will explore and use these new APIs. 2. repeat() As the name suggests, the repeat() instance method repeats the string content. It returns a string whose value is… Continue Reading java-11-string-api
getdocs
String toLowerCase and toUpperCase Methods in Java 1. Overview In this tutorial, we’ll cover the toUpperCase and toLowerCase methods included in the Java String class. We’ll start by creating a String called name: String name = “John Doe”; 2. Convert to Uppercase To create a new uppercase String based on… Continue Reading java-string-convert-case
getdocs
Adding a Newline Character to a String in Java 1. Overview String formatting and generating text output often comes up during programming. In many cases, there is a need to add a new line to a string to format the output. Let’s discuss how to use newline characters. Further reading:… Continue Reading java-string-newline
getdocs
Get Substring from String in Java 1. Overview In this tutorial, we’ll find out how to get a substring from a String in Java. We’ll mostly use the methods from the String class and few from Apache Commons’ StringUtils class. In all of the examples we’re going to work on: String… Continue Reading java-substring
getdocs
Find the Longest Substring without Repeating Characters 1. Overview In this tutorial, compare ways to find the longest substring of unique letters using Java. For example, the longest substring of unique letters in “CODINGISAWESOME” is “NGISAWE”. 2. Brute Force Approach Let’s start with a naive approach. To begin with, we can examine… Continue Reading java-longest-substring-without-repeated-characters
getdocs
String Not Empty Test Assertions in Java 1. Overview In certain scenarios, we need to assert if a given String is empty or not. There are quite a few ways to do such assertions in Java. Let’s explore some of those test assertion techniques in this quick tutorial. 2. Maven… Continue Reading java-assert-string-not-empty
getdocs