I measured with the following code. public static void main(String[] args) { boolean myVariable = true; long startTime = 0; long endTime = 0; long duration1 = 0; long duration2 = 0; for(int i=0; i<1000; i++) { startTime = System.nanoTime(); myVariable = !myVariable; endTime = System.nanoTime(); duration1 += (endTime – startTime); startTime = System.nanoTime(); myVariable … Read more
You have an error in this class/line jTMainMenu.java:786 Seems you tried to load a image in this point of your code, i don’t know how you are generating a executable from your java code but this may be the source of the problem. Try to put this image outside of your executable/jar and use a … Read more
It depends on what object does onVote event from Poll component pass. But if it’s vote object, that’s required in postPoll method as second arguement, than: function in onVote event should pass poll.id from this component and vote object from Vote component onVote event itself: onVote={(vote) => handalchange(poll.id, vote)} handalchange should fire postPoll api method … Read more
First you need to correct the syntax for the method Price(), you forgot to use parenthesis just after the method name in both the classes. Then you need to make the return value of Price() method in the class Ticket to an int value like 0 or 1. Because your return type is int and … Read more
If your method has the same name that the parent’s, parameters and return type, you’re overriding it. Also you can add @Override annotation on the top of your method. Always check parent’s method is not final nor private. For instance public class Parent{ public void method(String param){ //Do stuff } private void notExtendable(String param){ } … Read more
All that adding a throws does it say that the method can throw an Exception, you want to be handling an Exception if it is thrown. To do this, you can wrap the code chunk is a try-catch block. There is no way to stop an Exception from being thrown if it should be thrown, … Read more
You can probably understand from the other answers that it is not possible to change the size of an array after you create it. When you say int [] A = new int[5]; what you are really saying is that you have an object called ‘A’ and you want to put in there an array … Read more
htmlunit driver gives me com.gargoylesoftware.htmlunit.html.HtmlPage cannot be cast to com.gargoylesoftware.htmlunit.InteractivePage error solved htmlunit driver gives me com.gargoylesoftware.htmlunit.html.HtmlPage cannot be cast to com.gargoylesoftware.htmlunit.InteractivePage error
You could have a boolean instance variable in the Player Class that keeps track of whether the player skips her next turn. When you get to the point of checking if that value is true or false and it evaluate to true (ie yes, she skips her turn), then skip what you would normally do … Read more
The compiler is capable of telling you that your attempt to access a private variable outside of the declaring class is invalid. You don’t have to go through the runtime to get that. As an addendum: the code isn’t semantically valid, per the JLS: A member (class, interface, field, or method) of a reference type, … Read more
If you are using Eclipse, simply follow below steps: Right click on src folder(folder containing java files) of project Navigate to Source -> Externalize Strings.. Click Ok and you are done. solved Java: Move string literals to constant [closed]
That ‘terminated’ you have been seeing lately is the expected behavior when your program finishes. Put some System.outs or asserts to verify that your code runs (here it runs, with some awful cast warnings, but runs) final Queue12<T> ringBuffer = new QueueImpl12<T>(); T o = (T) new String(“this”); ringBuffer.enqueue(o); //add element to the back System.out.println(ringBuffer.peek());//this … Read more
Use the right way to compare string because you are comparing memory location of the String problem if(gender == “m”) //compares memory location of the String will return always false solution if(gender.equals(“m”)) 3 solved if-else statement does not execute in Java [duplicate]
I would recommend using JSoup for this. To do so add below to pom.xml <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.11.2</version> </dependency> Then you fire a first request to just get cookied Connection.Response initialPage = Jsoup.connect(“https://www.flightview.com/flighttracker/”) .headers(headers) .method(Connection.Method.GET) .userAgent(userAgent) .execute(); Map<String, String> initialCookies = initialPage.cookies(); Then you fire the next request with these cookies Connection.Response flights = Jsoup.connect(“https://www.flightview.com/TravelTools/FlightTrackerQueryResults.asp”) … Read more
All you need to do to override a method is to write a method in your subclass with the same signature: @Override public void clear() { … } The @Override annotation isn’t required (unless you have non-default compiler settings) but is highly recommended to help catch programming errors. For instance, if the method is declared … Read more