❮ String Methods
Example
String myStr = "Hello planet earth, you are a great planet.";
System.out.println(myStr.indexOf("planet"));Definition and Usage
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.
One of the following
public int indexOf(String
str )public int indexOf(String
str , int
fromIndex )public int indexOf(int
char )public int indexOf(int
char , int
fromIndex )Parameter Values
| Parameter | Description |
|---|---|
| str | A String value, representing the string to search for |
| fromIndex | An int value, representing the index position to start the search from |
| char | An int value, representing a single character, e.g 'A', or a Unicode value |
Technical Details
| Returns: | An int value, representing the index of the first occurrence of the character in the string, or -1 if it never occurs |
|---|