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Java checked exceptions

I’m trying to understand checked exceptions in Java and have the following query. Is the following correct: If a method has the potential to throw a checked exception, of any type, that exception must either be declared using the throws keyword, or caught by the respective method. If the above is correc…

Compile a .java File Programmatically [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 7 years ago. Improve this ques…

How can I remove border on JLabel?

So I am trying to start a graphics program, where I have a JFrame that holds multiple JPanels. The JPanels need to combine to create 1 image, however when I run my program I see borders around the images. I cannot quite distinguish if the border is caused by the JLabel that holds the image or if it is because

Access a private field for a junit test

I am trying to initialize a private field from a class in order to unit test its methods. For that I am using reflection but I am always getting an IllegalArgumentException and I don’t understand what I am doing wrong. My code looks something like this: I get this error when I am trying to run the test:…

Add multiple attachments in a pdf using itext pdf stamper

I want to add multiple attachments to a pdf file. When I go into the loop it only attaches the last attachment. sample code Answer You have adapted the existing example AddEmbeddedFile to add more than one attachment, and you claim that only one attachment is added. I can not reproduce this. I have also adapt…

Recyclerview not call onCreateViewHolder

My RecyclerView does not call onCreateViewHolder, onBindViewHolder even MenuViewHolder constructor, therefore nothing appears in RecyclerView. I put logs for debugging, and no log is shown. What might be the problem? My adapter: My custom row XML: and my Fragment: Answer Your getItemCount method returns 0. So…