What is a classpath and how do I set it?

When programming in Java, you make other classes available to the class you are writing by putting something like this at the top of your source file: import org.javaguy.coolframework.MyClass; Or sometimes you ‘bulk import’ stuff by saying: import org.javaguy.coolframework.*; So later in your program when you say: MyClass mine = new MyClass(); The Java Virtual … Read more

android.content.res.Resources$NotFoundException: String resource ID #0x0

Change dateTime.setText(app.getTotalDl()); To dateTime.setText(String.valueOf(app.getTotalDl())); There are different versions of setText – one takes a String and one takes an int resource id. If you pass it an integer it will try to look for the corresponding string resource id – which it can’t find, which is your error. I guess app.getTotalDl() returns an int. You … Read more

Why does Gson fromJson throw a JsonSyntaxException: Expected BEGIN_OBJECT but was BEGIN_ARRAY?

As the exception message states Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 16 path $.nestedPojo while deserializing, Gson was expecting a JSON object, but found a JSON array. Since it couldn’t convert from one to the other, it threw this exception. The JSON format is described here. In short, it … Read more

Official reasons for “Software caused connection abort: socket write error”

The java.net.SocketException is thrown when there is an error creating or accessing a socket (such as TCP). This usually can be caused when the server has terminated the connection (without properly closing it), so before getting the full response. In most cases this can be caused either by the timeout issue (e.g. the response takes … Read more