Java Programs easy way

package java2;

import java.util.Arrays;

import java.util.List;

public class met{

      public static int output1;

      public static void fn(String s) {

            StringBuffer sbuf = new StringBuffer(s);

            StringBuffer sbuf1 = new StringBuffer();

            String s1 = sbuf.reverse().toString();

            String[] s4 = { "a", "e", "i", "o", "u", "A", "E", "I", "O", "U" };

            List l1 = Arrays.asList(s4);

            if (s.equals(s1)) {

                  for (int i = 0; i < s.length(); i++) {

                        if (sbuf1.indexOf(Character.toString(s.charAt(i))) == -1

                                    && l1.contains(Character.toString(s.charAt(i)))) {

                              sbuf1.append(s.charAt(i));

                        }

                  }

            }

            if (sbuf1.length() >= 2)

                  output1 = 1;

            else

                  output1 = -1;

      }

      public static void main(String[] args) {

            fn("nayan");

            System.out.println(output1);

      }

}