How to use StringUtils in Apache Commons Lang?

LeftPad/RightPad/Center/Repeat- pads a String UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize- changes the case of a String CountMatches- counts the number of occurrences of one String in another IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable- checks the characters in a String DefaultString- protects against a null input String

Can a StringUtils be constructed in standard programming?

StringUtils instances should NOT be constructed in standard programming. Abbreviates a String using ellipses. Abbreviates a String using ellipses. Abbreviates a String to the length passed, replacing the middle characters with the supplied replacement String.

Where can I find Spring Framework source code?

This example Spring Framework source code file (StringUtils.java) is included in the DevDaily.com ” Java Source Code Warehouse ” project. The intent of this project is to help you ” Learn Java by Example ” TM. /* * Copyright 2002-2008 the original author or authors.

How does an empty string in StringUtils work?

An empty (“”) string input returns an empty string. A null or empty set of search characters returns the input string. The length of the search characters should normally equal the length of the replace characters. If the search characters is longer, then the extra search characters are deleted.

How to convert an InputStream to a string in Java?

You can use the Scanner class as well for converting an instance of InputStream to a string, as shown below: The Apache Commons IO library provides the IOUtils.copy () method to copy the InputStream object into a StringWriter. You can then use StringWriter to convert it into a string, as shown below:

How to do countmatches in Apache Commons Lang?

CountMatches- counts the number of occurrences of one String in another IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable- checks the characters in a String DefaultString- protects against a null input String Rotate- rotate (circular shift) a String Reverse/ReverseDelimited- reverses a String