java去除数值.0后缀

System.out.println(new BigDecimal("11.0").stripTrailingZeros());

package com.ricky.www;

public class Test {
	public static void main(String[] args) {
		/**
		 * (?:(\\.\\d*[^0])|\\.)中做出选择，当符合其中的第二种情况的时候
		 * 由于下面依然用$2来替换，而$2代表的是\\.\\d*[^0]为空，所以没有获得
		 * 那个点，也就是出现的只是整数的情况
		 */
		String regex = "(\\d+)(?:(\\.\\d*[^0])|\\.)0*";
		String data1 = "11.0";
                String data2 = "11.";
		String data3 = "123.0012200";
		String afterFormat = data1.replaceAll(regex, "$1$2");
		System.out.println(afterFormat);
	}
}

  <script type="text/javascript">
            var data1 = "11.00146400";
            var data2 = "11.000";
            var data3 = "11.";

            var regex = /^(\d+)(?:(\.\d*[^0])|\.)0*$/;

            window.alert(data1.replace(regex, "$1$2"));
            window.alert(data2.replace(regex, "$1$2"));
            window.alert(data3.replace(regex, "$1$2"));
        </script>