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Convert char to String in Java 1. Introduction Converting char to String instances is a very common operation. In this article, we will show multiple ways of tackling this situation. 2. String.valueOf() The String class has a static method valueOf() that is designed for this particular use case. Here you… Continue Reading java-convert-char-to-string
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Introduction to Apache Commons Text 1. Overview Simply put, the Apache Commons Text library contains a number of useful utility methods for working with Strings, beyond what the core Java offers. In this quick introduction, we’ll see what Apache Commons Text is, and what it is used for, as well… Continue Reading java-apache-commons-text
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Converting String to Stream of chars 1. Overview Java 8 introduced the Stream API, with functional-like operations for processing sequences. If you want to read more about it, have a look at this article. In this quick article, we’ll see how to convert a String to a Stream of single… Continue Reading java-string-to-stream
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Convert Hex to ASCII in Java 1. Overview In this quick article, we’re going to do some simple conversions between the Hex and ASCII formats. In a typical use case, the Hex format can be used to write down very large integer values in a compact form. For example, AD45… Continue Reading java-convert-hex-to-ascii
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Java String equalsIgnoreCase() 1. Overview In this quick tutorial, we’ll look at determining if two String values are the same when we ignore case. 2. Using the equalsIgnoreCase() equalsIgnoreCase() accepts another String and returns a boolean value: String lower = “equals ignore case”; String UPPER = “EQUALS IGNORE CASE”; assertThat(lower.equalsIgnoreCase(UPPER)).isTrue(); 3.… Continue Reading java-string-equalsignorecase
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Java – String to Reader In this quick tutorial we’ll take a look at how to convert a String to a Reader ,first using plain Java then Guava and finally the Commons IO library. This article is part of the “Java – Back to Basic” series here on Baeldung. 1.… Continue Reading java-convert-string-to-reader
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Checking If a String Is a Repeated Substring 1. Introduction In this tutorial, we’ll show how we can check in Java if a String is a sequence of repeated substrings. 2. The Problem Before we continue with the implementation, let’s set up some conditions. First, we’ll assume that our String… Continue Reading java-repeated-substring
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Check If a String Contains All The Letters of The Alphabet 1. Overview In this tutorial, we’ll see how to check if a String contains all the letters of the alphabet or not. Here’s a quick example: “Farmer jack realized that big yellow quilts were expensive.” – which does actually contain all… Continue Reading java-string-contains-all-letters
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Java String.codePointCount() Java Java String The method codePointCount() returns the number of Unicode code points in the specified range. The text range begins at the first index and ends at the second index – 1. Available Signatures public int codePointCount(int beginIndex, int endIndex) Example @Test public void whenCallCodePointCount_thenCorrect() { assertEquals(2,… Continue Reading string-code-point-count
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Java String.concat() Java Java String The method concat() concatenates two Strings. Simply put, it connects them into a single String. If the length of the argument is 0, then the method simply returns the String object. Available Signatures public String concat(String str) Example @Test public void whenCallConcat_thenCorrect() { assertEquals(“elephant”, “elep”.concat(“hant”));… Continue Reading string-concat
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