Anagram in java

package test;
import java.util.*;
public class anagram {
public static  String isanagram(String s,String s1)
{int x=s.length();
int y=s1.length();
if(x!=y)
return "not";
char a[]=s.toCharArray();
char b[]=s1.toCharArray();
Arrays.sort(a);
Arrays.sort(b);
if(Arrays.equals(a, b))
return "anagram";
else
return "not";
}
public static void main(String[] arg)
{
String s,s1;
Scanner sc=new Scanner(System.in);
s=sc.nextLine();
s1=sc.nextLine();
System.out.print(isanagram(s,s1));
}
}