public class S1 {

  public static void main(String argv[]) {
    String str1 = new String("abc");
    String str2 = new String("abc");
    String str3;

    if(str1.equals(str2)) {
      System.out.println("equal");
    } else {
      System.out.println("not equal");
    }     
    
    if(str1 == str2) {
      System.out.println("they are equal");
    } else {
      System.out.println("not equal");
    }
    // what about the == operator?
    // what about compareTo
    System.out.println(str1.compareTo(str2));
    System.out.println(str1.compareTo("ccc"));
    System.out.println(str1.compareTo("aaa"));

  }
}