Varieties of JTK Files

Principal JTK Type

.JTK

File Format:	.jtk
Type:	Java ToolKit File

Data file associated with Java Toolkit, a development tool used to create programs for Java runtime environment.

Company:	Sun Microsystems
Class:	Developer Files
Entry:	HKEY_CLASSES_ROOT\.jtk

Software Programs That Open The Java ToolKit File:

Java by Oracle Corporation

Windows

Mac

Linux

Solaris

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Sources of JTK Problems

Troubles Opening JTK Files

Java Disappeared

Double-clicking your JTK file prompts the message "%%os%% Can't Open JTK File". Customarily, this means that Java is not installed on %%os%%. The OS won't know what to do with your JTK file, so double-clicking to load the file doesn't work.

Tip: If you don't have Java installed, and you know of another program to open your JTK file, you can try opening it by selecting from the programs listed under "Show Apps".

Java is Out-of-Date

Your Java ToolKit File file is incompatible with Java because you might have the wrong version installed. Download the latest Java version from the Oracle Corporation website to ensure you have the correct one installed. This issue mainly occurs when your Java ToolKit File file was created by a newer version of Java than you have on your PC.

Tip: If you right-click on your JTK file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.

Summary: Not having the right Java version on your computer can cause problems opening JTK files.

Other JTK File Opening Causes

You can still experience errors opening JTK files even with the latest version of Java installed on your PC. Other JTK opening errors can be created by other system problems inside of %%os%%. Additional factors include:

• JTK file references in the Windows Registry are broken
• Mistaken removal of the Windows registry JTK description
• Partial installation of Java that did not fully complete
• File corruption affecting your JTK file
• The JTK is infected with a virus
• Device drivers for JTK-related hardware are out-of-date
• Too many applications are open on your PC to load your Java ToolKit File file successfully