String indexOf (String str) method in Java

String indexOf (String str) method in Java

The indexOf(String str) method in Java returns the index within this string of the first occurrence of the specified substring.

Syntax

Let us see the syntax,

Parameters

Let us see the parameters,

  • str– string

Example

The following is an example of indexOf(String str),

Output

The following is the output,

Java String indexof substring method

String indexOf (int ch, int fromIndex) method in Java
String indexOf(String str, int fromIndex) method in Java
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