![]() ![]() ![]() Let's understand the startIndex and endIndex by the code given below. The method throws an IndexOutOfBoundException when the startIndex is less than zero or startIndex is greater than endIndex or endIndex is greater than length of String. This method returns new String object containing the substring of the given string from specified startIndex to endIndex. If either or both of the arguments are negative or NaN, the substring () method treats them as if they were 0. It returns a new String object which contains the required substring from the given startingIndex. ![]() The slice () method returns an empty string if this is the case. Substring in Java The String.substring () method: There are two types: String substring (int startingIndex): This function does not alter the given string. public String substring(int startIndex, int endIndex): The substring () method swaps its two arguments if indexStart is greater than indeċnd, meaning that a string is still returned.The method throws an IndexOutOfBoundException when the startIndex is larger than the length of String or less than zero. This method returns new String object containing the substring of the given string from specified startIndex (inclusive). We'll mostly use the methods from the String class and few from Apache Commons' StringUtils class. public String substring(int startIndex): In this quick tutorial, we'll focus on the substring functionality of Strings in Java.You can get substring from the given String object by one of the two methods: Endindex of the substring starts from 1 and not from 0. The substring begins with the character at the specified index and extends to the end of this string. Suppose the string is " computer", then the substring will be com, compu, ter, etc. Replaces the first substring of a String that matches the given compiled regular expression with the given replacement. String substring () The substring () method has two variants and returns a new string that is a substring of this string. In case of substring() method startIndex is inclusive and endIndex is exclusive. Java String class provides the built-in substring() method that extract a substring from the given string by using the index values passed as an argument. In other words, substring is a subset of another String. ![]()
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