在java中自定義字符串排序

我已經寫了一個java程序在java中按字母順序排序字符串。問題是，當它排序，將其視爲字符具有串羅馬數字，並相應地進行排序在java中自定義字符串排序

import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Comparator; 
public class SampleCustomSortApp 
{ 
    @SuppressWarnings("unchecked") 
    public static void main(String[] args) 
    { 
     ArrayList<String> titles =new ArrayList(); 
     titles.add("java"); 
     titles.add("J-IV"); 
     titles.add("A-V"); 
     titles.add("J-V"); 
     titles.add("J-IX"); 
     titles.add("J-XX"); 
     titles.add("J-X"); 
     titles.add("J-I"); 
     titles.add("J-II"); 

     titles.add("datawarehouse"); 
     titles.add("oracledba"); 
     System.out.println("Before Sorting Elements Are :"+titles+"\n"); 
     Collections.sort(titles, new MyCustomCompator()); 
     System.out.println("After Sorting Elements Are :"+titles); 
    } 
} 
class MyCustomCompator implements Comparator 
{ 
    public int compare(Object s1,Object s2) 
    { 
     String one = (String)s1; 
     String two = (String)s2; 
     /* for ascending order */ 
     if(one.compareTo(two)>0){ 
      return 1; 
     }else{ 
      return -1; 
     } 
    } 
}

實際輸出

Before Sorting Elements Are :[java, J-IV, A-V, J-V, J-IX, J-XX, J-X, J-I, J-II, datawarehouse, oracledba] 

After Sorting Elements Are :[A-V, J-I, J-II, J-IV, J-IX, J-V, J-X, J-XX, datawarehouse, java, oracledba]

所需的輸出

Before Sorting Elements Are :[java, J-IV, A-V, J-V, J-IX, J-XX, J-X, J-I, J-II, datawarehouse, oracledba] 

After Sorting Elements Are :[A-V, J-I, J-II, J-IV, J-V,J-IX, J-X, J-XX, datawarehouse, java, oracledba]

我應該使用正則表達式表達比較字符串。有些人可以告訴我解決方案

來源

2013-05-28 Vivek Shankar