(1) Is there a way to see your program's warnings and problems (similar to the Problems view in Eclipse)? I mean that the problems are showing up constantly inside a pane (located near the editor), instead of having to put the mouse cursor to see the problem. Eclipse does this in its Problems view for warnings and possible errors.
(2) Also, is there a way to put the cursor inside a data type (for example, inside ArrayList), and then do a hot key, which will launch the type's JavaDoc in a browser?
I downloaded the JavaDocs from the Update Manager, but don't know how to dynamically view them! In Eclipse you can put your mouse cursor inside an object, for example, Hashtable, and then click on Shift-F2, and an external browser will launch showing the specific JavaDoc.
(3) I am running the Output view in the bottom, is that similar to the Console view in Eclipse?
You can view the available keyboard shortcuts for NetBeans 5.5 by invoking 'Help | Keyboard shortcuts' menu item. As per the the documentation, Alt-F1/Shift-F1 are the shortcut keys for display/search javadoc.
Regarding (3), yes, the output window captures the console output from running programs.
NetBeans provides an error stripe to the right of the editor's scroll bar and refers to the whole file and not just the visible portion. Double-clicking on an error icon will scroll the file to the line containing the error.