Description:

    * Debug Applications, Applets, Servlets and EJBs.
    * Local and Remote debugging.
    * Run, Attach and Listen.
    * User friendly GUI.
    * Multi-Thread debugging.
    * Breakpoint Groups.
    * Data Tool Tips.
    * Hot Swap classes and Pop stack frames.
    * Save settings in Projects.
    * Modify primitive variables.
    * Display loaded classes.
    * Display toString() results.
    * Display Chained Exceptions.
    * Display Memory Usage and Java System Properties.
    * Evaluate simple Expressions including Method Calls.
    * Stop on Thread Start and Death events.
    * Stop on Class Load and Unload events.
    * Stop on Method Entry and Exit events.
    * Stop on Field Watchpoint events.
    * Launch External Text Editor.

down:

http://www.debugtools.com/download.html

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