TreeTable in Java using SwingX

TreeTable is a combination of Tree and Table. It can be very nice component when you want to display tabular data in a hierarchical manner. Last week when I was looking for a component that can be used to implement TreeTable, I came across JXTreeTable. It is a component of SwingX package by SwingLabs.

TreeTable

Using JXTreeTable we can create TreeTable very easily. Only difficult part is creating the DataModel to match with our requirement.

This is the sample application, I did for my HCI assignment with contains code for how to use  JXTreeTable. You can download SwingX here. Hope this will be helpful for you.

 

Maximum RAM supported in Windows XP

Recently I assembled a new computer with 4GB RAM. My motherboard supports up to 8GB RAM and Widows XP supports 4GB RAM so no problem.....

But when I open the System Properties, it shows only 3.23GB of RAM. Where did the rest go? OK, I'm using onboard VGA with 256MB memory, so part of the RAM will be allocated to that and will not be shown in System Properties. But even with that there is considerable amount of RAM is missing.

4GB RAM not showing in System Properties.

I wanted to know why it is. So I did an Google search and found out this. Reason is XP uses its 32bit address space not only to address memory but also to address some other components like System ROM , APIC(s),Integrated PCI devices, such as network connectors and SCSI controllers, PCI cards , Graphics card, etc... Because of this some part of the ram may not be accessible by the operating system since it ran out of address space.

 

Using Bookmarks in Eclipse

When we are writing programs it is important to keep track of important locations in the code. Using Bookmarks are the easiest way to do it. But in Eclipse that feature is some what hidden. By default there is no shortcut for that as well.

To add a Bookmark chose the code fragment you want to bookmark and from Edit menu select Add Bookmark. Once the bookmark is added there will be a small blue rectangle in the left hand side of the code window and a green rectangle in right had side of the code window. To view all the bookmarks that you added you have to bring in the Bookmarks view. Select Window > Show View > Other… from the main menu. Type "bookmark" in the filter box of the Show View Dialog box and select Bookmarks view.

Eclipse Show Views

 Eclipse Bookmarks Vie

To make the process of adding bookmarks easy you can create a shortcut key combination for it. To do that choose Window > Preferences from the main menu, which brings up the Preferences dialog. Then type in “key” in the filter box, which takes you to General>Keys. Then selects the Modify tab. Select “Edit” from the Category drop-down. Then choose “Add Bookmark” from the Name drop-down. Then click in the Key Sequence > Name text box. Then hold down the keys you want to use for your keyboard shortcut. I selected Alt+B for this. You can selects any unassigned key combination for this. Finally click Add.

Now you can use this shortcut to add bookmarks very easily. Cool isn't it?..............

 

Tribune to Heros

Tribune to Heros
We will never forget the sacrifices you made to protect our country....

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