String indexOf(String str int fromIndex) method in java
import java.util.*;
public class StringIndexOfMethodExample
{
public static void main(String[] args)
{
String strInput = new String("hello world core java");
String strSub = new String("core");
System.out.print("Index found: " );
System.out.println(strInput.indexOf(strSub, 3));
}
}