Your program is not “stuck”, it is waiting for you to enter the “user input” (again). You keep calling returnUserInput() inside the loop, and it calls getUserInput(), which will wait for you to type (another) string and press Enter. As for your code, don’t declare line as a field. It should be a local variable. … Read more
Why are you creating new instance of JButton in roll? You just need to change the icon of the buttons which are already displayed on the screen This… public void roll() { value = nextValue() ; if (value==1){ Icon i=new ImageIcon(getClass().getResource(“1.png”)); c= new JButton(i); add(c); } else if(value==2){ Icon im=new ImageIcon(getClass().getResource(“2.png”)); c= new JButton(im); add(c); … Read more
This should work as you specified in your question. DateFormat dateFormat = new SimpleDateFormat(“yy-MMM-dd HH:mm:ss a”); System.out.println(dateFormat.format(new Date())); The date format you have in your question is something like: DateFormat dateFormat = new SimpleDateFormat(“yyyyMMddHmmss”); 2 solved Convert String to Date object [duplicate]
You have two issues: 1) Your closing } for the try is inside the if. 2) You are not properly calling the constructor of IllegalArgumentException. Do `throw new IllegalArgumentException(); In the future, you should read and try to understand the compiler message. It is most likely telling you exactly what there errors are and where. … Read more
Take a look at Java Collections. You can use a List like Luiggi suggested, or you may want to use a Map so that you can look them up by name or Id. import java.util.HashMap; import java.util.Map; public class Employee { private final String name; private final int Id; private static Map<String, Employee> employeesByName = … Read more
It simply means: Return the property file as InputStream from the ClassLoader the current thread of my application is running from (in loose english). 4 solved Usage of Thread.currentThread().getContextClassLoader().getResourceAsStream(“system.properties”) [closed]
Here is a simple solution: String s = “Hello stack over flow”; List< String > words = Arrays.asList( s.split( ” ” ) ); Collections.reverse( words ); String reversed = words.get( 0 ); for ( int i = 1; i < words.size(); ++i ) { reversed += ” ” + words.get( i ); } I assume … Read more
I would use java.time for a task like this. You can define two java.time.format.DateTimeFormatter instances (one for parsing the input string to java.time.YearMonth and another for formatting the obtained YearMonth to a string of the desired format). Define a method like this one: public static String convert(String monthInSomeYear, Locale locale) { // create something that … Read more
As I understand you are looking for a paging/scrolling using buttons (in addition to the normal scrollbar scrolling) to scroll through grid lines. The FIXGRID has some server-side API which allows access/update to the scrolling: FIXGRIDBinding.getSbvalue() ==> current scroll position FIXGRIDBinding.getSbvisibleamount() ==> number of lines currently displayed FIXGRIDBinding.getSbmax() ==> max scroll position FIXGRIDBinding.setSbvalue() ==> set/update … Read more
For db Add indexes for frequently searched fields Think about table partitioning, rarely searched data should be stored in archive tables For backend Optimize queries Minimize cursor fetching For client Use pagination to avoid large data loading Use async loading (SwingWorker for swing, Service for javafx) to avoid UI hanging Don’t mix archive and working … Read more
Use this: String replaced = yourString.replaceAll(“[^\\w\\xAE\\xA9~. -]”, “_”); In Java, \w matches all ASCII letters, numbers and underscore A9 and AE are the hex codes for copyright and registered trademark 1 solved Java String replace Regular Expression
You should read the documentation of List and Map (respective HashMap) to see how to use them. Since your List contains Map you’ll have to get a Map using the List operations and then get the elements from that Map using the Map operations: HashMap<String, String> firstMap = lst.get(0); String someEntry = firstMap.get(“key”); 0 solved … Read more
You’re getting a copy of the contents of the edittext too early. Move the k = Jtextbox1.getText().toString(); inside the onClick(). solved whats wrong with the android code ?
Your error is on line 73: birthyear = Integer.parseInt(request.getParameter(“birthyear”)); I’m guessing by your code that the form in the doGet function is the form posting the data you want to store in your database. Your form doesn’t contain a birthyear field. Its absence makes request.getParameter(“birthyear”) return null, which causes a NullPointerException when trying to parse … Read more
Always remember that Maven’s policy is convention over configuration. That being said, in your case, while using Maven, you need to follow the Maven Standard Directory Structure. Create a directory structure like src/main/java and put your package(s) in the java folder. For any resources, create a folder structure like src/main/resources and put your resources in … Read more