/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String str1 = "Hello World";
	    String str2 = "wOr";
	    System.out.println(str1.indexOf(str2));                               // -1
	    System.out.println(str1.toLowerCase().contains(str2.toLowerCase()));  // true
	    System.out.println(str1.toLowerCase().indexOf(str2.toLowerCase()));   // 6
	}
}

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