java实现浮点数转人民币

import java.util.ArrayList;
import java.util.List;

public class RMBConverter2 implements IRMBConverter {
	
	private static final String [] RMB_NUMBER ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
	
	private static final String [] RMB_ATTR = {"元","十","佰","仟","万","十","百","仟","亿","十","佰","仟","万","十","佰","仟"};
	
	private static final String[] RMB_FEN = {"分","角"};
	
	
	@Override
	public String change2RMB(double counts) {
		StringBuffer rsBuf = new StringBuffer();
		
		if (counts == 0L) {
			return "零";
		}
		
		if (counts < 0) 
			rsBuf.append("负");
		
		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<String> zhengList = new ArrayList<String>();
		
		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<xLength ;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("零+", "零");
		rs = rs.replaceAll("零元", "元");
		rs = rs.replaceAll("零万", "万");
		rs = rs.replaceAll("零亿", "亿");
		rs = rs.replaceAll("亿万", "亿");
		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));
	}

}