java
The request was rejected because no multipart boundary was found in springboot
As I am trying this with spring boot and webservices with postman chrome add-ons. In postman content-type=”multipart/form-data” and I am getting the below exception. In Controller I specified the below code Here I specify the file handler code
How to print out all the elements of a List in Java?
Here is some example about getting print out the list component:
Java Not Greater than Or Equal to Operator for Char Type
So I’m trying to write this in a short way: Basically if the user does not input a letter between A and C, a while loop will run until A,B,C,a,b,c is inputted. It should be in the form of while(letter<‘a’ && letter > ‘c’) but it didn’t work apparently because if I inputted F, is … Read more
Playing .mp3 and .wav in Java?
Java FX has Media and MediaPlayer classes which will play mp3 files. Example code: You will need the following import statements:
java attempting to assign weaker access privilege error
The lines with the problem are the two below You try to override the until method which has public access in the com.thoughtworks.selenium.Wait class by a until method which is only package visible. You cannot override a method and reduce visibility. You can only increase the visibility (e.g. overriding a protected method and making it … Read more
DTO and DAO concepts and MVC
DTO is an abbreviation for Data Transfer Object, so it is used to transfer the data between classes and modules of your application. DTO should only contain private fields for your data, getters, setters, and constructors. DTO is not recommended to add business logic methods to such classes, but it is OK to add some … Read more
How does addNotify() and requestFocus() work in Java with JPanel?
addNotify() gets called whenever the Component gets added to a Container. This method can therefore be used to gain parent information without the risk of having a null parent, which in the constructor is more than likely. requestFocus() makes a request that the given Component gets set to a focused state. This method requires that … Read more
Fields in interfaces
All fields in interface are public static final, i.e. they are constants. It is generally recommended to avoid such interfaces, but sometimes you can find an interface that has no methods and is used only to contain list of constant values.
How to programmatically close a JFrame
If you want the GUI to behave as if you clicked the X close button then you need to dispatch a window closing event to the Window. The ExitAction from Closing An Application allows you to add this functionality to a menu item or any component that uses Actions easily.