operator: A string is an object that represents a sequence of characters. It represents null that shows empty char. Syntax: str2.equalsIgnoreCase (str1); Note: Here str1 and str2 both are the strings that we need to compare. A place where magic is studied and practiced? Since you have a space there. How can I fix 'android.os.NetworkOnMainThreadException'? I don't think an array of char can have an element that is null. Is you problem using a for loop? For example, to assign an instance with size 5, initialize it as follows: char[] JavaCharArray = new char[5]; The values will be assign to this array as follows: char[] JavaCharArray = new char[5]; JavaCharArray [0] = 'a'; JavaCharArray [1] = 'b'; The implementation is highly optimised because Strings are such a fundamental Java data type, eg under some circumstances different Strings may share the same underlying character arrays to minimise storage. Syntax: if (str == null) Print true if the above condition is true. Developed by JavaTpoint. Styling contours by colour and by line thickness in QGIS. I want to check if the char is null or not? In this post, we will see org.apache.commons.lang3.StringUtils isAlpha () example in Java. From your code it seems like you work with Unicode and the method you search for is into Character class (java.lang), It also contains lots of useful static method that can suite you. Check Whether an Alphabet is Vowel or Consonant, remove all the white spaces present inside the string. In Java, like other primitives, a char has to have a value. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/23\/Check-Null-in-Java-Step-1-Version-2.jpg\/v4-460px-Check-Null-in-Java-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/2\/23\/Check-Null-in-Java-Step-1-Version-2.jpg\/aid1050598-v4-728px-Check-Null-in-Java-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":348,"bigWidth":728,"bigHeight":551,"licensing":"
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