Conversions | Foss Guru

📄️ 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.

📄️ Convert int to String in Java (with Performance Comparison)

In Java, converting an int value to String is not difficult, but knowing which method may save us a few CPU cycles is worth knowing.

📄️ Convert String to long in Java

Java examples of converting a String to a long type using Long.parseLong(String), Long.valueOf(String) and new Long(String) constructor.

📄️ Convert long to String in Java

Java example to convert long to String in two different ways using String.valueOf(long l) and Long.toString(long l) methods. Both are static methods.

📄️ Convert Date to String and String to Date in Java

Java example to convert Date to String and wise versa.

📄️ Convert String to String[] in Java

Java examples to convert a string into string array using String.split() and java.util.regex.Pattern.slipt() methods.

📄️ 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.

📄️ Convert String to InputStream in Java

Java example to convert String to InputStream using ByteArrayInputStream and IOUtils classes. Writing String to InputSteam is a frequent job .

📄️ Convert InputStream to String in Java

Learn to convert InputStream to String using Google guava IO’s ByteSource and CharStreams, BufferedReader, Scanner, and IOUtils classes.

📄️ 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.

📄️ 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.

📄️ How to Unescape HTML in Java

Java examples unescapes an HTML string to a string containing the actual Unicode characters using StringEscapeUtils and a custom method.

📄️ Convert Byte[] to String and Vice-versa

Conversion between byte array and string may be used in many cases including IO operations, generate secure hashes etc.

📄️ Convert Exception StackTrace to String in Java

Java program to convert error stack trace to String.

📄️ Convert Float to String in Java

Learn to convert float value to String using Float.toString() and String.valueOf() methods and format float to n decimal points.