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I have two lists containing the same objects. How do I change one list without changing the other? [duplicate]

由 自作多情 提交于 2020-12-25 18:17:20
问题 This question already has answers here : How do you make a deep copy of an object? (19 answers) Closed 4 years ago . I first noticed this problem when I only put the objects in listOfRates and then created inverseListOfRates by copying it. But even using this method, I can't alter one list without altering the other. How do I solve this issue? List<HistoricRate> listOfRates = new ArrayList<HistoricRate>(); List<HistoricRate> inverseListOfRates = new ArrayList<HistoricRate>(); for

I have two lists containing the same objects. How do I change one list without changing the other? [duplicate]

由 ♀尐吖头ヾ 提交于 2020-12-25 18:11:28
问题 This question already has answers here : How do you make a deep copy of an object? (19 answers) Closed 4 years ago . I first noticed this problem when I only put the objects in listOfRates and then created inverseListOfRates by copying it. But even using this method, I can't alter one list without altering the other. How do I solve this issue? List<HistoricRate> listOfRates = new ArrayList<HistoricRate>(); List<HistoricRate> inverseListOfRates = new ArrayList<HistoricRate>(); for

Servlet监听器

由 落花浮王杯 提交于 2020-12-19 09:45:29
一、监听三个域对象创建和销毁的事件监听器 1. ServletContextListener接口 创建类MyServletContextListener实现ServletContextListener public class MyServletContextListener implements ServletContextListener { public void contextDestroyed(ServletContextEvent arg0) { System.out.println(arg0.getServletContext() + "被创建了"); } public void contextInitialized(ServletContextEvent arg0) { System.out.println(arg0.getServletContext() + "被销毁了"); } } 在web.xml文件中配置 <listener> <listener-class>cn.class3g.web.listener.MyServletContextListener </listener-class> </listener> 执行结果为：启动服务器时打印”被创建了“停止服务器时打印“被销毁了”； 2.HttpSessionListener接口

javascript - using for (key in json) - I would like to get every other key note json consists only of objects

由 北慕城南 提交于 2020-12-15 05:40:08
问题 I would like to use for (key in json) but only use every other key. It would be simple using arrays, but the json I recieve consists only of objects. I have already asked a smililair question and th nicee people pointed out a typo and why it didn't work. The problem (I am still having) is that the content is duplicated (ie: I would like the 1st object in id="1" and the 2cnd object in id="2", then the 3rd object again in id="1" and the 4th object again in id="2" etc.) The problem is that I get

javascript - using for (key in json) - I would like to get every other key note json consists only of objects

由 若如初见. 提交于 2020-12-15 05:40:05
问题 I would like to use for (key in json) but only use every other key. It would be simple using arrays, but the json I recieve consists only of objects. I have already asked a smililair question and th nicee people pointed out a typo and why it didn't work. The problem (I am still having) is that the content is duplicated (ie: I would like the 1st object in id="1" and the 2cnd object in id="2", then the 3rd object again in id="1" and the 4th object again in id="2" etc.) The problem is that I get

Ampersand in object's properties

由 本秂侑毒 提交于 2020-12-15 05:16:22
问题 I'm writing a JS script that has an object with &'s in some of its properties, e.g. var topicObj = { "Client & Peripherals": ["USB", "Printer", "Copy/Paste"], "Install & Upgrade": ["Tenant Upgrade", "Agent upgrade"] } The thing is, when I attempt to iterate over one of its values, e.g. selMTopic = "Client & Peripherals" for (t in topicObj[selMTopic]) { addTopic(topicsDD,topicObj[selMTopic][t]); } it fails, it can't compute t , I guess it doesn't like having &'s, and similar characters, in the

Ampersand in object's properties

由 会有一股神秘感。 提交于 2020-12-15 05:15:27
问题 I'm writing a JS script that has an object with &'s in some of its properties, e.g. var topicObj = { "Client & Peripherals": ["USB", "Printer", "Copy/Paste"], "Install & Upgrade": ["Tenant Upgrade", "Agent upgrade"] } The thing is, when I attempt to iterate over one of its values, e.g. selMTopic = "Client & Peripherals" for (t in topicObj[selMTopic]) { addTopic(topicsDD,topicObj[selMTopic][t]); } it fails, it can't compute t , I guess it doesn't like having &'s, and similar characters, in the

how to remove quotes from object response for particular key value and return the same structure

由 ≯℡__Kan透↙ 提交于 2020-12-15 03:42:16
问题 I've have structure like below from response { "last UpdatedTime":"18:00:01 AM", "has PErmission":false, "block UsersSubFeatures":true, "block CurrentUserTill":"NA", "unlock UserOnlyForVisibility":"['departmentXYZ']" } Note: "unlockUserOnlyForVisibility":"['departmentXYZ']" // array in as string. But want to convert like { "last UpdatedTime":"18:00:01 AM", "has PErmission":false, "block UsersSubFeatures":true, "block CurrentUserTill":"NA", "unlock UserOnlyForVisibility":['departmentXYZ'] } so

how to remove quotes from object response for particular key value and return the same structure

由 ♀尐吖头ヾ 提交于 2020-12-15 03:37:23
问题 I've have structure like below from response { "last UpdatedTime":"18:00:01 AM", "has PErmission":false, "block UsersSubFeatures":true, "block CurrentUserTill":"NA", "unlock UserOnlyForVisibility":"['departmentXYZ']" } Note: "unlockUserOnlyForVisibility":"['departmentXYZ']" // array in as string. But want to convert like { "last UpdatedTime":"18:00:01 AM", "has PErmission":false, "block UsersSubFeatures":true, "block CurrentUserTill":"NA", "unlock UserOnlyForVisibility":['departmentXYZ'] } so

Compilation error: Exception in thread “main” java.lang.Error: Unresolved compilation problems with findElement(By.Id()) using Selenium Webdriver

由 喜欢而已 提交于 2020-12-13 21:06:13
问题 I have configured Java, Eclipse and Selenium to be used for automating a web based application. But, I am facing below mentioned issues: Issue 1: Warning : Build path specifies execution environment JavaSE-14. There are no JREs installed in the workspace that are strictly compatible with this environment. Issue 2: Unable to access objects of selenium in the code. Issue 3: Getting the below mentioned compilation error: Exception in thread "main" java.lang.Error: Unresolved compilation problems
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