Java Escape HTML – Encode Special Characters
Java examples to escape HTML using the StringEscapeUtils.escapeHtml4(), Spring’s HtmlUtils.htmlEscape() and custom logic for special cases.
Java 9 – Compact Strings Improvement [JEP 254]
Till Java 8, String in java were internally represented by char[]. Each char is stored in 2 bytes in memory. JDK developers at oracle analyzed lots of client’s application help dumps and they noticed that most of the strings can be represented only using Latin-1 characters set. A latin-1 char can be stored in one byte, which is 50% (1 byte) less than char data type storage.
Convert String to int in Java
learned to parse a string (decimal, octal and hexadecimal) to int or Integer types using Integer.parseInt(), valueOf() and decode() methods.
Split CSV String using Regex in Java
Learn to split string by comma or space and store in array or arraylist. Use given Java program to convert string to List in Java.
Join or Concatenate Strings with Comma in Java
Learn to join string array with delimiter to produce single string. Use listed java example to convert list of strings or array of strings to single string.
Left, Right, or Center Align a String in Java
Learn to align a string to left, right or center in Java using the utility StringAlignUtils, which wraps all the alignment logic inside it.
Different Ways to Split a String in Java
Learn to split a String with delimiters in Java using String.split(), StringUtils.split() and Splitter.split() APIs with examples.
Java String.join()
Since Java 8, we can use String.join() method to concatenate strings with a specified delimiter. For advanced usages, use StringJoiner class.
Why are Strings Immutable in Java?
The immutable strings help in achieving the required data safety and performance in a Java application with help of underlying string pool.
Find Duplicate Words in a String in Java
Learn to find duplicate words in string or sentence along with their counts, using the Collections and Java 8 Stream with Examples.