object EmptyStringExtensions { extension (str: String) def isEmptyOrWhitespace: Boolean = str.trim.isEmpty def isNullOrEmptyOrWhitespace: Boolean = str == null || str.isEmptyOrWhitespace } We must import EmptyS
First two deal with null value and second two deal with empty string. <xsl:if test="USER/FIRSTNAME"> USERNAME is not null </xsl:if> <xsl:if test="not(USER/FIRSTNAME)"> USERNAME is null </xsl:if> <xsl:if test="USER/FIRSTNAME=''"> USERNAME is empty string </xsl:if> <xsl:if...
Example 1: Check if String is Empty or Null class Main { public static void main(String[] args) { // create null, empty, and regular strings String str1 = null; String str2 = ""; String str3 = " "; // check if str1 is null or empty System.out.println("str1 is " + is...
Learn how to effectively check if a Java string is null, empty, and whitespace. Enhance code reliability and prevent errors. Master string validation in Java now!
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Checking if a string is NULL or EMPTY is very common requirement in Powershell script. If we don’t do that we will end up with run time errors if we try to perform some operation on that string variable which is empty or null. So the question now is, how to check it?
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// checking if the string is blank "emptyString": isBlank(""), "stringWithSpaces": isBlank(" "), "textString": isBlank(someString), "somePayloadValue": isBlank(payload.nonExistingValue), "nullString": isBlank(nullString), // checking if the...
not_contained_in col not in [a, b, c, ...] agnostic not_in Alias of not_contained_in agnostic is_between a <= col <= b numeric, date has_pattern Matching a pattern defined as a regex string is_legit String not null & not empty ^\S$ string has_min min(col) == x numeric ...