What is indexof() method

Question

what is indexof() method describe

Answer 1

indexOf method is mainly an array method ( wich return the first index item corresponding )...

As strings can be considered as arrays of characters, the indexOf method can also be applied on it as explained by @Nikhil Kumar ;)

Answer 2

indexOf() method is used to return the first occurrence of the character that is passed in as an argument.

Eg: String str = "Nikhil";
int i = str.indexOf ('i');
SOPln (i);

output will be 1.
note: counting is zero indexed based.

Answer 3

hello nikhil I don't understand indexof() method please explain more example