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Table of Contents

jGRASP Tips and Tricks

What is jGRASP?

According to www.jGRASP.org , “jGRASP is a lightweight development environment, created specifically to provide automatic generation of software visualizations to improve the comprehensibility of software”.

Entering Command-Line Arguments

Command-line arguments are the String objects that are passed to the main() method (as a String[]). They can be set/entered in several ways.

One way is to click on Build and pull down to Run Arguments. This will open an entry field below the tool bar that you can use to enter the arguments (delimited by spaces) that will be passed to main() when you run the application.

You can also “permanently” set the command-line arguments by clicking on Settings, pulling down to Compiler Settings and then over to Workspace or File, whichever you prefer. Then select the “Compiler” tab and the “Flags/Args” tab. The “Run” field under “FLAGS or ARGS” contains the command-line arguments. When the box next to it is selected, no arguments are passed to main(), when it isn't whatever arguments are in the field are passed to main().

Setting the Tab Size

To set the tab size, click on Settings+CSD Window and then select either File, Project or Workspace (depending on which you want to change). Then “unlock” the tab size slider (by clicking on the default box) and change the “Tab Size” to the value you want.

Changing Tabs to Spaces (and Back)

Some editors use tabs and some use spaces. This makes it a little difficult to move between editors. Most, however, allow you to switch between the two. In jGRASP:

  1. Select the text you want to change.
  2. Click on Edit+Spaces/Tabs and then Tabify or Untabify.

Using checkstyle

Selecting a Checks File

In jGRASP, click on Tools, pull down to Checkstyle and across to Settings. In the field labeled “Checks File” navigate to the .xml file. Then, click on OK.

You must exit and re-start jGRASP for the change to take effect.

Running Checkstyle

In jGRASP, click on Tools, pull down to Checkstyle and over to Check File (or click on ).

Cleaning-Up Indenting

jGRASP does not have a command that re-indents code, but you can trick it into doing so.

  1. Click on View+Generate CSD (or the button).
  2. Click on View+Remove CSD (or the button).