I have this HashMap: <integer,map<integer,string>>.
I want to delete all the Map of specific Integer.
For example, if my Map is:
If the Input Is 2, I want it to be:
I have Eclipse on my desktop at home, and on my netbook.
I have a workplace on a thumb drive.
I'm quite new to Eclipse, so this may be trivial to old hands, but it is currently a blockade to me.
The design and source code windows have disappeared. Previously, I could switch between them.
On my screen, I see MyProject.java in the one and only window pane in Eclipse. The font is too small for me to read. Previously, I was able to choose the font and size of the contents. When I try to do that now, no effect occurs on the source code.
The "Design" window pane has totally disappeared. What did I do to make that happen ? How do I get it back ?
I spent ten minutes trying to search and guess the menu system and got nowhere.
What do I click in order to ?...
Return the "Design" window pane to my environment so that I can click on it and do the graphical stuff.
Return the source code window pane to my sight which responds to Window -> Preferences -> General -> Appearance -> Colors And Fonts -> (So that I can do the actual code stuff)
It is a while since I used eclipse, but as I recall there were menu items to show the various windows. There are also a couple of icons at the top right (I think) which allow you to show different layouts for different situations: one for development, and another for run/debug. Take a look at [^] which may give some clues. They do use some odd terminology but it does make more sense as you get used to it.
Login failed for user: usually means that some credential is not valid. Check that your userid and password are both correct. Also check any server logs to see if there is more informarion on exactly what went wrong.
It is one of those good practices which you're asked to follow while writing your code because it makes a lot cleaner and concise code. This is similar as to why we programmers focus so much on indentation... Because whenever you're working on a big project chances are you may not be the only person working on it, so if someone else has to review your code it'll be a lot easier for him/her to get a reference as to where was each variable declared. Because you might be well aware of the haunting NullPointerException which just pops out of no where and can be really trick to negotiate if your code isn't clear.