String-compareTo()

String 類別 (class) 有 compareTo() 方法 (method)。 若str1 > str2 回傳true str2 > str1 回傳false 相等回傳0

public class SequenceString {
 public static void main(String args[]){
  String string1 = "A";
  String string2 = "To";
  String string3 = "Z";
  
  String string1Out = "\"" + string1 + "\"";
  String string2Out = "\"" + string2 + "\"";
  String string3Out = "\"" + string3 + "\"";
  
  if(string1.compareTo(string3) < 0){
   System.out.println(string1Out + " is less than " + string3Out);
  }else{
   if(string1.compareTo(string3) > 0){
    System.out.println(string1Out + " is greater than " + string3Out);
   }else{
    System.out.println(string1Out + " is equal to  " + string3Out);
   }
  }
  if(string2.compareTo(string1) < 0){
   System.out.println(string2Out + " is less than " + string1Out);
  }else{
   if(string2.compareTo(string1) > 0){
    System.out.println(string2Out + " is greater than " + string1Out);
   }else{
    System.out.println(string2Out + " is equal to  " + string1Out);
   }
  }
 }
}