How to convert String to Integer in Java
In Java, we can use Integer.valueOf(String) to convert a String to an Integer object; For unparsable String, it throws NumberFormatException. We will examine deeply on how to convert a String…
Java – How to check if a String is numeric
Few Java examples to show you how to check if a String is numeric. We have several ways to check numeric string: using Character.isDigit(), using NumberUtils.isDigits() from Apache Commons Lang
How to split a string in Java
In Java, we can use String#split() to split a string. We will examine deeply many ways or options to split a string.
How to compare strings in Java
In Java, we use equals() to compare string value. In this article, we will show you a few ways to compare strings in Java: using equals(), using equalsIgnoreCase(), using contentEquals(),…
Java String compareTo() examples
The Java String compareTo() method compares two strings lexicographically (alphabetical order). It returns a positive number, negative number, or zero. if s1 < s2, it returns negative number. if s1…
How to convert String to byte[] in Java?
In Java, we can use str.getBytes(StandardCharsets.UTF_8) to convert a String into a byte. And we can use new String(bytes, StandardCharsets.UTF_8) to convert byte to a String.
How to convert byte[] array to String in Java
In Java, we can use new String(bytes, StandardCharsets.UTF_8) to convert a byte to a String. For text or character data, we use new String(bytes, StandardCharsets.UTF_8) to convert the byte to…
How to convert String to Hex in Java
Here are a few Java examples of converting between String or ASCII to and from Hexadecimal. Apache Commons Codec – Hex, Integer, Bitwise
Java – Convert IP address to Decimal Number
In this tutorial, we show you how to convert an IP address to its decimal equivalent in Java, and vice versa. We show you two ways to convert an IP…
Java MD5 Hashing Example
The MD5, defined in RFC 1321, is a hash algorithm to turn inputs into a fixed 128-bit (16 bytes) length of the hash value. In Java, we can use MessageDigest…