I know that Eclipse have a function that allow us to see the steps of execution of a program.
Can anyone tell me how can I find it? I really need it to study and understand some pices of code.
Look for the little green bug at the top.
If you run it by pressing this icon, your application will run in a new perspective and stop at your breakpoints.
Enter breakpoints by clicking the area where you see the blue dot in this picture.
Navigate inside of the debugger with:
Green arrow is for running till next breakpoint.
Red square is for terminating the process.
The 90degree arrow goes into methods you invoke showing each step IN the method. The last arrow executes them without showing the steps.
If you're done with debugging you can switch perspective here.(upper right corner)
Executing your java program step by step you need to follow a few steps:
Set a breakpoint by double-clicking left of the very first line of your program, which seems to be something like public static void main(String[] args).
The breakpoint looks like this ->
Open your program in the view. (in the standard layout this could be found in the top right corner of your eclipse ide)
Start running your program in debug mode (in the standard layout this could be found in the toolbar at the top of your eclipse ide)
Now you can easily navigate through your program by using the F5-F7 buttons or clicking these icons in the top toolbar
For deeper insight look at the tutorial Here
Related
I cannot seem to find the option to change this variable in WindowBuilder at all. In the preview the orientation is fine...
But when I run the program I get this...
Notice how it goes right to left instead of left to right like most programs do.
I cannot find where to change this anywhere in the SWT documentation. Can anyone please point me in the right direction? Thanks.
In IntelliJ every time I make a change in code and I run the app afterwards, "run window" is automatically popped up. Is there any way to disable this annoying behaviour or how to make it less distracting?
I finally could solve this one. At least it worked for me. At the bottom of "Run/Debug configurations" window and in "Before launch" part, uncheck "Activate tool window" check box.
There is currently no solution to do this permanently. However, there is a workaround to prevent it from popping up. Try this:
After the first time the window pops-up simply resize it all the way to the bottom (i.e. grab the TOP and drag down until the window disappears). This will prevent it from popping up again until you manually click one of the buttons to open any window in the same area (i.e. Run, TODO, Android, Terminal, Messages, (and Find Results) - or whatever you have in that same area if you've customized it).
To keep it from popping up, never click the hide button on any of these windows but rather use the same "drag from top to bottom" to hide them (the effect is the same).
This is annoying, to say the least, but once you get used to it it works fine and is much less annoying than dealing with that blasted Run popup window :)
NOTE
I should mention that this is completely safe to do as the windows are only hidden when you do this, and clicking the window's button at the bottom will show it in its original size - so nothing goes missing or breaks using this method :-)
These are called Tool Windows. Right-click the tool window, it pops up a menu, the last option of which is 'Hide'.
Alternatively,
You can install the plugin ToolWindow Manager to show/hide the Tool Window of your choice.
Either
1. Set the run window to be in either split and then shrink it down to be as small as possible.
2. Set the windows to be in floating mode and then shrink it down and move it somewhere less distracting.
disabling checkboxes in "Window | Background tasks solved my problem.
It is soooo annoying oO I just dragged the windows to an other screen and/or set their height to a minimum.. Not "best practise" but it is better than nothing -.-
In intellij go to main menu windows->active tool window->disable floating mode option there.
thanks
For those who are facing this issue with "Run" window they can follow below instruction
From dropdown select "Edit Configuration":
Open Logs tab:
Uncheck these 2 checkboxes:
I have found a solution!!!!
There old plugin for Intellij IDE called "Hide Tool Window Ex".
It hides any tool windows that being opened just after you click in editor again.
(plugin page)
visual example
I'm in the process of moving from JCreator to Eclipse.
When I hit build the button the output is shown at the bottm of the page, but I want my output to be shown in another window (typically black and white on JCreator).
Can anyone identify what the name of this window is and how to obtain this for eclipse?
I swear this answer should be on stack overflow, but I'm afraid my novice vocabulary is keeping me from finding the answer.
You can drag the console anywhere you want. If you move it outside the Eclipse window, it is completely detached.
I've written a Java database program using Swing, and it looks and works fine on my Windows machine. I was expecting to be able to transfer it to my Linux (CentOS 6) machine with no problems, and while it compiles and runs just fine, the GUI is blank.
Specifically, a JDialog that I show appears as a solid grey rectangle, but I can still see my cursor change to an I bar when I hover over the text boxes, and I can type into them and press the invisible Ok button, and it works. (This is a database login dialog.)
Then, a JFrame that I've setup as an MDI parent is displayed, but it has zero size. If I drag it open it does have a border, but it does not visibly have the menu that I placed on it. I don't seem to be able to access the menu invisibly as I was able to on the JDialog.
I suspect that this must have something to do with some Java or library version, but I'm not sure. I tried installing Java 7 but it didn't change anything. I'm not sure if I should uninstall Java completely and try reinstalling it, or if maybe it has something to do with the project instead (I am using Eclipse Kepler if that helps.)
I see a few other "Java program is blank" questions, but they either do not have answers or are not the same issue I am having. (My program is only blank under CentOS so far; it works and looks just fine under Windows.)
I narrowed it down to a single line. In the JDialog I had the following:
setType(Type.POPUP);
as soon as I removed this line, the dialog became visible.
Additionally, I find that if I use the Test/Preview... feature (this is using the WindowBuilder) when that line is present, it shows the dialog blank, but it is non-interactive and effectively hangs Eclipse. This led me to "end-task" java.exe, which did unfreeze Eclipse, but it ended up causing even more problems, including the ones I was having with my MDI JFrame.
After rebooting, and removing the above POPUP line, everything is working great.
In my old IDE, if I'd run a Java file and the console requested input, it would jump my text cursor to it so I could type without moving my mouse. Eclipse doesn't seem to do this. Can I make it?
Also, how do you hide the toolbar? I prefer keyboard shortcuts so it's just cluttering up my view.
To hide the toolbar, you can go here: http://code.google.com/p/eclipse-hide-toolbar/
for a plugin which hides the toolbar every time you start eclipse.
I don't think there is a way to have your cursor jump to the input like you described but it's a minor issue when you consider that an average user clicks and moves the mouse thousands of times a day, never mind an active programmer.
But I might be wrong.