Here’s your method: public static Calendar toCalendar(Date date){ Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal; } Everything else you are doing is both wrong and unnecessary. BTW, Java Naming conventions suggest that method names start with a lower case letter, so it should be: dateToCalendar or toCalendar (as shown). OK, let’s milk your code, shall … Read more
I think the succinct summary of why null is undesirable is that meaningless states should not be representable. Suppose I’m modeling a door. It can be in one of three states: open, shut but unlocked, and shut and locked. Now I could model it along the lines of class Door private bool isShut private bool … Read more
You can cast null to any reference type without getting any exception. The println method does not throw null pointer because it first checks whether the object is null or not. If null then it simply prints the string “null”. Otherwise it will call the toString method of that object. Adding more details: Internally print … Read more
For those of you who don’t want to install preview version of ADT, there is a workaround described here. Open properties of project in Eclipse then Resources -> Resource filters. Click the “Add…” button -> Check “Exclude all”, “Files and folders”, “All children”. In the text entry box input “.svn” (without quotes). Restart Eclipse. I … Read more
The FXMLLoader creates an instance of the class specified in the fx:controller attribute of the FXML root element. It then injects the elements defined in the FXML file into the controller instance it created when the fx:id attributes match the field names. Then it calls the initialize() method on that instance. You create an instance … Read more
I have your answers! Never close the db. It is that simple. Make sure you only have one, repeat, *one Helper instance per application. Share it with all threads. http://www.touchlab.co/blog/single-sqlite-connection/ Here’s some more info on the internals of sqlite and locking: http://www.touchlab.co/blog/android-sqlite-locking/
It seems the button you are invoking is not in the layout you are using in setContentView(R.layout.your_layout) Check it.
The issue is in the your-avd-name.ini that is located at …\<user-profile>\.android on your Windows machine (if you’re Windows user). When any error occurs during the avd.ini parser, the Google ADT plugin tries to access a map that is null. The workaround is to delete the offending .ini file and recreate your avd(s). This information was … Read more
I’ve always used if (“true”.equals(object.getAttribute(“someAttr”))) { // …. because although it is a little more difficult to read it’s much less verbose and I think it’s readable enough so you get used to it very easily
With the JVM flag -XX:-OmitStackTraceInFastThrow you can disable the performance optimization of the JVM for this use case. IF this parameter is given, which disables the flag, the stacktrace will be available. For more information please have a look at the following release notes: “The compiler in the server VM now provides correct stack backtraces … Read more