![]() These days we tend to favor for-each style constructs but this is how a lot of code is written. The association with 0-based indexing is more clear if you think about the standard old-style for-loop: for (int i = 0 i < end i++). The approach you see here is not only useful but also consistent with most the APIs you will find in Java and many other languages. I agree with Micheal Borgwardt's answer but there is an opportunity for elaboration. This question is different from the discussion on solely substring() as it is about all methods that use indexcies to indicate that the method should stop before the provided endIndex (exclusion instead of inclusion). Some example snippets would be:Įxample 1: 4: StringBuilder sb = new StringBuilder("abcdef") ĭoes this seem strange to anyone else considering how some other methods with index parameters work? Is there a reason for this? If so, please explain it to me.Įdit to differentiate and clarify unique question: Is there a reason for this? It doesn't seem, at least to me, to make logical sense for these methods to indicate the method stops before the parameter instead of at the parameter unlike some other methods, in other classes. Note: The startIndex is included in the range and indexing of the string is 0 based.I've noticed that some methods like the String's substring(int beginIndex, int endIndex) and StringBuilder's delete(int beginIndex, int endIndex), use the second parameter to signify that the substring or deletion should go to endIndex-1 and not endIndex. This method only takes the starting index of the string and returns a new string that is substring which begins at that startIndex and ends at the end of the string which means the range of substring is from startIndex till the end of the string. Two ways of finding Substring in Java String substring(startIndex) So in the above two use-cases, you have to find out the substrings of the above-given string, and then you can use those substrings according to your requirements. Similarly, if you want to remove the last name of the above person’s name then you have to consider the substring whose index is ranging from 0 to 8 and discard the rest of the substring or part of the string. In the given string if you want to remove Mr from the name and use only Yuvraj Singh then you have to find out the substring of the whole string whose index ranges from 3 to 14 if you consider 0 based indexing of the string. Suppose you have a string of the name of the person with the salutation of Mr or Ms and you want to use only the name of that person which means you have to remove the salutation from that string. So, you can say that a substring is a continuous subset of the string. If you take “Sler” as a string then it is not a substring of the above string as it is not continuous in the given string. Now, here in the above string “Interviewbit” is a substring of the above string as it is a continuous sequence of characters in the given string. So substring is a contiguous sequence of characters in a string or you can say that substring is a part of a string and that part can be the whole string as well. ![]() We will start this article by substring definition. The first method returns a substring that starts from the specified index and goes to the end of the string, while the second method returns a substring that starts from the specified start index and ends at the specified end index (exclusive). There are two methods in Java to a substring of a specified string: ![]() 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"Īre all substrings. A substring is a contiguous sequence of characters within a string.
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