java 부동점수 인민폐 전환을 실현하는 작은 예

 
  
import java.util.ArrayList; 
  
import java.util.List; 
  
 
  
public class RMBConverter2 implements IRMBConverter { 
  
 
  
    private static final String [] RMB_NUMBER ={" "," "," "," "," "," "," "," "," "," "}; 
  
 
  
    private static final String [] RMB_ATTR = {" "," "," "," "," "," "," "," "," "," "," "," "," "," "," "," "}; 
  
 
  
    private static final String[] RMB_FEN = {" "," "}; 
  
 
  
      
  
    @Override 
  
    public String change2RMB(double counts) { 
  
        StringBuffer rsBuf = new StringBuffer(); 
  
 
  
        if (counts == 0L) { 
  
            return " "; 
  
        } 
  
 
  
        if (counts < 0)  
  
            rsBuf.append(" "); 
  
 
  
        String zheng = strConverse(String.valueOf((long)counts)); 
  
        String xiao = strConverse(String.valueOf(Math.round((counts - (long)counts)*100))); 
  
 
  
        char [] zhengArray = zheng.toCharArray(); 
  
        char [] xiaoArray = xiao.toCharArray(); 
  
 
  
        int zLength = zhengArray.length; 
  
        int xLength = xiaoArray.length; 
  
 
  
        List zhengList = new ArrayList(); 
  
 
  
        for(int i =0; i< zLength; i++) { 
  
            int value = Integer.parseInt(""+zhengArray[i]); 
  
            if (value == 0 && (i != 4) && (i != 8) && i != 0) { 
  
                zhengList.add(RMB_NUMBER[value]); 
  
            }else { 
  
                zhengList.add(RMB_NUMBER[value]+ 
  
                     RMB_ATTR[i]); 
  
            } 
  
        } 
  
 
  
        for(int i = zhengList.size()-1; i>=0; i--) { 
  
            rsBuf.append(zhengList.get(i)); 
  
        } 
  
 
  
          
  
        for(int i =0; i            int value = Integer.parseInt(""+xiaoArray[i]); 
  
            if (value > 0 ) { 
  
                rsBuf.append(RMB_NUMBER[value]) 
  
                 .append(RMB_FEN[xLength-i-1]); 
  
            } 
  
        } 
  
 
  
        String rs = rsBuf.toString(); 
  
        rs = rs.replaceAll(" +", " "); 
  
        rs = rs.replaceAll("  ", " "); 
  
        rs = rs.replaceAll("  ", " "); 
  
        rs = rs.replaceAll("  ", " "); 
  
        rs = rs.replaceAll("  ", " "); 
  
        return rs; 
  
    } 
  
 
  
      
  
    private String strConverse(String str) { 
  
        StringBuffer rs = new StringBuffer(); 
  
        char [] strArray = str.toCharArray(); 
  
        for(int i = str.length()-1; i>=0; i--) { 
  
            rs.append(strArray[i]); 
  
        } 
  
        return rs.toString(); 
  
    } 
  
 
  
      
  
    public static void main(String args []) { 
  
 
  
        RMBConverter2 c2 = new RMBConverter2(); 
  
        System.out.println(c2.change2RMB(2001004.10)); 
  
        System.out.println(c2.change2RMB(2000000.10)); 
  
        System.out.println(c2.change2RMB(0L)); 
  
        System.out.println(c2.change2RMB(1121000010000000L)); 
  
    } 
  
 
  
}