package org.yeshi.utils;
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import java.text.DecimalFormat;
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import java.util.regex.Pattern;
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public class NumberUtil {
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/**
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* 保留2位小数
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*
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* @param price
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* @return
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*/
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public static String get2PointNumber(double price) {
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DecimalFormat decimalFormat = new DecimalFormat("##0.00");//
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String p = decimalFormat.format(price);//
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return p;
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}
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/**
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* 保留1位小数
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*
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* @param price
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* @return
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*/
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public static String get1PointNumber(float price) {
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DecimalFormat decimalFormat = new DecimalFormat("##0.0");
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String p = decimalFormat.format(price);
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return p;
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}
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/**
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* 保留1位小数
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*
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* @param price
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* @return
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*/
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public static String get1PointNumber(double price) {
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DecimalFormat decimalFormat = new DecimalFormat("##0.0");// 构�?方法的字符格式这里如果小数不�?�?会以0补足.
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String p = decimalFormat.format(price);// format 返回的是字符�?
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return p;
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}
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private static String getNumberWithZero(int number) {
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if (number < 10)
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return "0" + number;
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else
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return number + "";
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}
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/**
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* 将秒转为时间字符串
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*
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* @param second
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* @return
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*/
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public static String convertSecondToString(int second) {
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if (second < 60) {// 小于1分钟
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return "00:" + getNumberWithZero(second);
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} else if (second < 60 * 60) {// 小于1小时
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int minite = second / 60;
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return getNumberWithZero(minite) + ":" + getNumberWithZero(second % 60);
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} else {
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int hour = second / (60 * 60);
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int minite = (second % (60 * 60)) / 60;
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int se = (second % (60 * 60)) % 60;
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return getNumberWithZero(hour) + ":" + getNumberWithZero(minite) + ":" + getNumberWithZero(se);
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}
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}
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/**
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* 判断字符串中是否包含数字
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*
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* @param str
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* @return
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*/
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public static boolean isNumeric(String str) {
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if (str == null || "".equals(str.trim())) {
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return false;
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}
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Pattern pattern = Pattern.compile("[0-9]*");
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return pattern.matcher(str).matches();
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}
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/**
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* 去除小数点后面 多余的0
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*
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* @param s
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* @return
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*/
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public static String subZeroAndDot(String s) {
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if (s.indexOf(".") > 0) {
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s = s.replaceAll("0+?$", "");// 去掉多余0
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s = s.replaceAll("[.]$", "");// 如最后一位是.则去0
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}
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return s;
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}
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}
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