![]() ![]() If the endingIndex is 2, the substring will be wrongly extracted as “we”. A substring can consist of any number of characters, from a single character to the entire string itself. For example, in the string 'Hello World' 'Hello' 'World' 'o W' 'llo Wo' 'd' are all substrings. The startingIndex is always inclusive and the endingIndex is always exclusive.įor example: From the String “welcome”, if you want to extract the substring “wel”, the startingIndex will be 0, and the endingIndex will be 3. A substring is a contiguous sequence of characters within a string. The method throws a StringIndexOutOfBoundException if,Ī) the startingIndex is greater than the endingIndex, or negative, or greater than the length of the given string, or,ī) endingIndex is greater than the length of the given string or negative. You can replace 7 with any number say N, if you want to get last 'N' characters. It returns a new String object which contains the required substring from the given startingIndex to endingIndex. You can achieve it using this single line code : String numbers text.substring (text.length () - 7, text.length ()) But be sure to catch Exception if the input string length is less than 7. This function does not alter the given string. ![]() String substring(int startingIndex, int endingIndex):.It throws a StringIndexOutOfBoundException if the value of the startingIndex is larger than the length of the specified String or negative. It returns a new String object which contains the required substring from the given startingIndex. Substring in Java The String.substring() method: It takes in the index from which the substring is extracted as its parameter. The String class in Java provides a built-in method called String.substring(), to extract the required substring from a given string. Returns the index within this string of the. For example, ‘Code’ is a substring of the string ‘CodeSpeedy’. Returns the index within this string of the first occurrence of the specified character. In this tutorial, you will learn what a substring is in Java.Ī substring is a part or subset of another string. ![]()
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