char 和String的转换问题？

下面程序的结果为？public class String_to_char { public static void main(String[] args) { String s = "hello";         char ch[] = s.toCharArray();                       String s1 = new String(ch);                  System.out.println("\n"+s1);                  if(s1.equals(s)){         System.out.print(true);         }else         System.out.print(false);                      if(s.equals(ch)){                 System.out.print("true");         }else{         System.out.print("false");             }                  char a1[] ={'h','e','l','l','o'};          if(ch.equals(a1)){         System.out.print("true");         }else{         System.out.print("false");           }                           }}