Before using JCreator, install the Java Development Kit (JDK) from Sun Microsystems. You will need to download and install both the JDK and the Java API documentation.
Java Development Kit (JDK)
Go to the download page for JDK Version 1.6: http://java.sun.com/javase/downloads/index.jsp.
Click on the [download] button of JDK 6 update 18, and you will be forwarded to the download page.
Double check that the download page is for Java SE Development Kit 6u18
Click on the [continue] button.
Close the popup window [X].
Click on the link for the file jdk-6u18-windows-i586.exe.
Install the JDK in the default directory C:\Program Files\Java\jdk1.6.0\.
Java API Documentation
Go to the download page for JDK Version 1.6: http://java.sun.com/javase/downloads/index.jsp.
Click the Download button for Java SE 6 Documentation.
To download this zipped file, you must accept the license agreement.
After accepting the license agreement, download the file jdk-6-doc.zip.
Unzip the archive in the same directory as the JDK; that is, C:\..\jdk1.6.0\.
Using the Setup Wizard to Start JCreator
Launch JCreator.
Follow the Setup wizard, setting the paths to C:\..\jdk1.6.0\ and C:\..\jdk1.6.0\docs.
Starting JCreator Without Using the Setup Wizard
With JCreator active, open the Options window from the Configure menu.
Click the JDK Profiles option.
Click the default item in the list, and click Edit.
Ensure that the Name field shows the correct version of the selected JDK directory; in this case, JDK version jdk1.6.0.
Set the JDK Home path by clicking the Browse button next to this field.
Browse to the root directory of the JDK installation: C:\..\jdk1.6.0\. Click OK.
Click the Documentation tab, and Add the path: C:\..\jdk1.6.0\docs. Click OK.
Close the windows.