Which of the following methods in StringBuffer returns a substring based on the specified indices?a)substring()b)substr()c)subString()d)slice()

Which method in StringBuffer is used to obtain the index within the sequence of the first occurrence of a specified character or substring?a)findFirst()b)indexOf()c)search()d)locate()

Which method is used to split a string into an array of substrings based on a delimiter?a)divide()b)parse()c)split()d)separate()

Which of the following functions is used to find the position of the particular substring within a string? Answer choicesSelect only one optionREVISITFINDSEARCHFINDALL

A substring is a contiguous sequence of characters within a string. Given a string S and an integer n, write a C code to generate all substrings of length n without vowels. For example, if the given string S1 is ‘apple’ then substrings of S1 of length 3 are app, ppl, pple. And substrings of length 3 without vowels is only one and it is ppl.

Write a program to find the substring of a given string.