IndexOf In Java Example

Chapter: String Handling Last Updated: 09-06-2017 13:11:14 UTC

Program:

            /* ............... START ............... */
                
public class JavaIndexOf {
	public static void main(String args[]) {
		String s1 = "this is index of example";
		// passing substring
		int index1 = s1.indexOf("is");// returns the index of is substring
		int index2 = s1.indexOf("index");// returns the index of index substring
		System.out.println(index1 + "  " + index2);
	}
}
                /* ............... END ............... */
        

Output

2  8

Notes:

  • The java string indexOf() method returns index of given character value or substring.
  • If index is not found, it returns -1. The index counter starts from zero.
  • There are four types of indexOf method in java.
  • int indexOf(int ch): It returns the index of the first occurrence of character ch in a String.
  • int indexOf(int ch, int fromIndex): It returns the index of first occurrence if character ch, starting from the specified index “fromIndex”.
  • int indexOf(String str): Returns the index of string str in a particular String.
  • int indexOf(String str, int fromIndex): Returns the index of string str, starting from the specified index “fromIndex”.

Tags

IndexOf, Java

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