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Name

indexOf()

Class

String

Description

Tests to see if a substring is embedded in a String, and returns the index position of the first occurrence of the substring defined in the str parameter. If the str substring is not found within the String, -1 is returned.

Examples

  • String str = "CCCP";
int p1 = str.indexOf("C");
int p2 = str.indexOf("P");
int p3 = str.indexOf("CP");
println(p1 + ":" + p2 + ":" + p3);  // Prints "0:3:2"

Syntax

  • str.indexOf(str)
  • str.indexOf(str, fromIndex)

Parameters

  • strString: any variable of type String
  • strString: the substring to search
  • fromIndexint: the index from which to start the search

Return

  • int
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