İnt array indexof java

Java String indexOf(String substring) Method Example

indexOf() The indexOf() method, given one argument: a substring to search for, searches the entire calling string, and returns the index of the first occurrence of the specified substring .

The indexOf() method returns the position of the first occurrence of specified character(s) in a string . Tip: Use the lastIndexOf method to return the position of the last occurrence of specified character(s) in a string.

Definition and Usage. The indexOf() method returns the position of the first occurrence of a value in a string . The indexOf() method returns -1 if the value is not found. The indexOf() method is case sensitive.