package com.22pig.util;<\/p>\n
import java.math.RoundingMode;
\nimport java.text.DecimalFormat;
\nimport java.text.NumberFormat;<\/p>\n
import org.apache.commons.lang.StringUtils;<\/p>\n
public class DoubleUtil {<\/p>\n
\/**
\n* NumberFormat is the abstract base class for all number formats.
\n* This class provides the interface for formatting and parsing numbers.
\n* @param d
\n* @return
\n*\/
\npublic static String formatDoubleUp(double d,int len) {
\nreturn String.format(“%.”+len+”f”, d);
\n}<\/p>\n
public static String formatDoubleUp(String d,int len) {
\nif(d.contains(“.”)){
\nlen = d.indexOf(“.”)+len;
\nif(len>d.length()) len = d.length();
\nd= d.substring(0,len);
\n}
\nreturn d;
\n}<\/p>\n
\/**
\n* NumberFormat is the abstract base class for all number formats.
\n* This class provides the interface for formatting and parsing numbers.
\n* @param d
\n* @return
\n*\/
\npublic static String formatDoubleDown(double d,int len) {
\nNumberFormat nf = new DecimalFormat(“#.#”);
\nnf.setMaximumFractionDigits(len); \/\/ \u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570
\nnf.setRoundingMode(RoundingMode.DOWN);\/\/ \u4e0d\u9700\u8981\u56db\u820d\u4e94\u5165
\nreturn nf.format(d);
\n}<\/p>\n
public static String addDouble(String[] doubleStrArr){
\ndouble sum =0;
\nfor(int i=0;i<doubleStrArr.length;i++){
\ndouble tmp = parseDouble(doubleStrArr[i]);
\nsum+= tmp;
\n}
\nreturn String.valueOf(sum);
\n}<\/p>\n
public static double parseDouble(String str){
\nif(StringUtils.isBlank(str) || “null”.equals(str.trim())){
\nstr = “0”;
\n}
\nreturn Double.parseDouble(str);
\n}<\/p>\n
\/\/s\u4e3anull\u6216””\u65f6\u5019\u8fd4\u56de0
\npublic static String null2o(String s) {
\nreturn (s == null||s.equals(“”)) ? “0” : s;
\n}<\/p>\n
public static double[] parseDouble(String[] dss){
\ndouble[] ds = new double[dss.length];
\nfor(int i=0;i<dss.length;i++){
\nds[i] = parseDouble(dss[i]);
\n}
\nreturn ds;
\n}
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
package com.22pig.util; import java.math.RoundingMode; import java.text.DecimalFormat; import java.text.NumberFormat; import org.apache.commons.lang.StringUtils; public class DoubleUtil { \/** * NumberFormat is the abstract base class for all number formats. * This class provides the interface for formatting and parsing numbers. * @param d * @return *\/ public static String formatDoubleUp(double d,int len) { return String.format(“%.”+len+”f”, d); } public […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-145","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/145","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=145"}],"version-history":[{"count":0,"href":"http:\/\/22pig.com\/index.php?rest_route=\/wp\/v2\/posts\/145\/revisions"}],"wp:attachment":[{"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=145"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/22pig.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}