for (CommodityVO good : goods) { StringBuilder name = new StringBuilder(good.getName()); if (StringUtil.isNotBlank(good.getData()) || StringUtil.isNotBlank(good.getAttribute()) || StringUtil.isNotBlank(good.getMaterial())){ name.append("("); } if ((StringUtil.isNotBlank(good.getData()) && StringUtil.isNotBlank(good.getAttribute())) || (StringUtil.isNotBlank(good.getData()) && StringUtil.isNotBlank(good.getMaterial()))) { name.append(good.getData()).append("、"); }else{ name.append(good.getData()); } if (StringUtil.isNotBlank(good.getAttribute()) && StringUtil.isNotBlank(good.getMaterial())) { name.append(good.getAttribute()).append("、"); }else { name.append(good.getAttribute()); } if (StringUtil.isNotBlank(good.getMaterial())) { String[] list = good.getMaterial().split(","); if (list.length > 1){ String join = String.join("/", list); name.append(join); }else { name.append(good.getMaterial()); } } if (StringUtil.isNotBlank(good.getData()) || StringUtil.isNotBlank(good.getAttribute()) || StringUtil.isNotBlank(good.getMaterial())){ name.append(")"); } if (!ObjectUtil.isEmpty(good.getVipMoney())) { good.setMoney(good.getVipMoney()); }}怎么优化更简洁

优化以下代码，考虑onWorkingEmployee中Name会重复的问题，去重： StringBuilder userName = new StringBuilder(); for (OnWorkingEmployeeVO onWorkingEmployee : onWorkingEmployees) { if (Objects.equals(onWorkingEmployee.getName(), onWorkingEmployees.get(onWorkingEmployees.size() - 1).getName())){ userName.append(onWorkingEmployee.getName()); }else{ userName.append(onWorkingEmployee.getName()).append(","); } }

可以使用Set来去重，然后再将...for (String name : uniqueNames) { userName.append(name).append(","); } // 去除最后一个逗号 if (userName.length() > 0) { userName.deleteCharAt(userName.length() - 1); }

Char 9: error: unknown type name 'StringBuilder' StringBuilder builder = new StringBuilder();

For example, if you are using the 'StringBuilder' class from the 'System.Text' namespace, add the following line at the top of your file: using System.Text; If you have already included the ...

使用java流优化下列代码 StringBuilder awardName=new StringBuilder(); StringBuilder awardInfo=new StringBuilder(); for (TaskAward award : taskAward) { awardName.append(award.getName()).append(","); awardInfo.append(award.getInfo()).append(","); }

.map(award -> award.getName()) .collect(Collectors.joining(",")); String awardInfo = taskAward.stream() .map(award -> award.getInfo()) .collect(Collectors.joining(",")); 这样做的优点在于，你...

将下面这段代码优化以下（ List<TaskAward> taskAward = taskAwardService.selectTaskAwardByCode(primaryDatum.getTaskCode(), taskGroupCode); if(!CollectionUtils.isEmpty(taskAward)){ if(type.equals(CommonBusinessEnum.TaskTypeEnum.YDWZ.getValue())){ List<AwardDetails> objects = taskAward.stream() .map(award -> { AwardDetails awardDetails = new AwardDetails(); awardDetails.setAwardName(award.getName()); awardDetails.setAwardInfo(award.getInfo()); awardDetails.setAwardType(award.getAwardType()); return awardDetails; }) .collect(Collectors.toList()); valueMap.put("awardDetail", objects); }else { StringBuilder sbName = new StringBuilder(); StringBuilder sbInfo = new StringBuilder(); for (TaskAward award : taskAward) { sbName.append(award.getName()).append(","); sbInfo.append(award.getInfo()).append(","); } String awardName = sbName.deleteCharAt(sbName.length() - 1).toString(); String awardInfo = sbInfo.deleteCharAt(sbInfo.length() - 1).toString(); valueMap.put("awardType", taskAward.get(0).getAwardType()); valueMap.put("awardName", awardName); valueMap.put("awardInfo", awardInfo); } }）

AwardDetails awardDetails = new AwardDetails(); awardDetails.setAwardName(award.getName()); awardDetails.setAwardInfo(award.getInfo()); awardDetails.setAwardType(awardType); return awardDetails; ...

检查以下代码是否有问题： StringBuilder info = new StringBuilder(); if (CollectionUtils.isNotEmpty(adminCreateVO.getSalaryGroupResourceList())){ for (SalaryGroupResourceVO salaryGroupResourceVO : adminCreateVO.getSalaryGroupResourceList()) { StringBuilder salaryGroupName = new StringBuilder("【" + salaryGroupMap.get(salaryGroupResourceVO.getSalaryGroupId()) + "】"); for (SalaryGroupIdentityVO resourceIdentity : salaryGroupResourceVO.getResourceIdentities()) { if (!Objects.equals(resourceIdentity.getName(), SalaryGlobalConstants.PAYROLL_GROUP_MANAGEMENT_SALARY_APPROVAL)){ salaryGroupName.append(resourceIdentity.getName()).append("、"); } } info.append(salaryGroupName.substring(0, salaryGroupName.length() - 1)).append(";"); } }

3. 在salaryGroupName.append(resourceIdentity.getName()).append("、")这一行，你将每个resourceIdentity.getName()都添加到了salaryGroupName中，并在后面添加了一个逗号。但请注意，在最后一个元素后面不...

StringBuilder stringBuilder = new StringBuilder(1000);

StringBuilder stringBuilder = new StringBuilder(1000)是创建一个初始容量为1000的StringBuilder对象[^1]。...String str = stringBuilder.toString(); System.out.println(str); // 输出：Hello World

为什么StringBuilder new 出来的对象不能直接.trim()方法

StringBuilder 是一个可变的字符串，它的实例是可以直接修改的。所以，StringBuilder 类并没有提供 trim() 方法。如果你需要去掉 StringBuilder 实例中的空格，可以使用以下方法： 1. 转换为 String 类型后使用 ...

BufferedReader reader = new BufferedReader(new FileReader(htmlFile)); StringBuilder stringBuilder = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { stringBuilder.append(line); stringBuilder.append(System.lineSeparator()); } reader.close();怎么处理乱码问题

stringBuilder.append(System.lineSeparator()); } reader.close(); String html = stringBuilder.toString(); 在上面的示例中，我们使用InputStreamReader将字节流转换为字符流，并指定UTF-8字符集。这样，...

Random rand = new Random(); StringBuilder sb = new StringBuilder(); for (int i = 0; i < STRING_LENGTH; i++) { char c = (char) (rand.nextInt(26) + 'a');获取这个生成的字符

StringBuilder sb = new StringBuilder(); for (int i = 0; i < STRING_LENGTH; i++) { char c = (char) (rand.nextInt(26) + 'a'); sb.append(c); } String randomString = sb.toString(); 这样，你就可以...

StringBuilder stringBuilder = new StringBuilder(1000);如何在c++中实现

stringBuilder.reserve(1000); // 设置初始容量为1000 // 追加字符串 stringBuilder.append("Hello"); stringBuilder.append(" "); stringBuilder.append("World"); // 在指定位置插入字符 stringBuilder....

帮我找出这段代码的错误， public String replaceSpace(String s) { StringBuilder sb = new StringBuilder(); for(int i = 0;i < s.length;i++){ if(s.charAt(i) == ' '){ sb.append("%20"); continue; }else{ // sb.append(s.charAt(i)); sb.append(String.valueOf(s.charAt(i))); } } return sb.toString(); }

StringBuilder sb = new StringBuilder(); for (int i = 0; i < s.length(); i++) { if (s.charAt(i) == ' ') { sb.append("%20"); } else { sb.append(String.valueOf(s.charAt(i))); } } return sb....

List<String> monthByYear = DateUtils.getMonthByYear(year); StringBuilder esIndexBuilder = new StringBuilder(); for (String monthStr : monthByYear) { String tempEsIndex = StrUtil.join(StrUtil.UNDERLINE, TP_PORTFLUX, sysId1, year, monthStr, CommonEnum.STAT_MONTH.getCode()); esIndexBuilder.append(tempEsIndex).append(","); } esIndex = esIndexBuilder.toString(); 最后一位没有逗号

StringBuilder esIndexBuilder = new StringBuilder(); for (int i = 0; i < monthByYear.size(); i++) { String monthStr = monthByYear.get(i); String tempEsIndex = StrUtil.join(StrUtil.UNDERLINE, TP_...

StringBuilder sb = new StringBuilder(256); 长度可以超过256吗

StringBuilder sb = new StringBuilder(256); 的长度可以超过256。在这个例子中，256只是初始容量，而不是限制长度的上限。StringBuilder类会根据需要自动调整其内部缓冲区的大小，以容纳更多的字符。因此，你可以向...

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使用java流优化下列代码 StringBuilder awardName=new StringBuilder(); StringBuilder awardInfo=new StringBuilder(); for (TaskAward award : taskAward) { awardName.append(award.getName()).append(","); awardInfo.append(award.getInfo()).append(","); }

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为什么StringBuilder new 出来的对象不能直接.trim()方法

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