The following preferences can be set using the 
       Java > Debug > Heap
      Walking preference page.
    
These preferences allow count settings for Java 1.6 heap walking features to be changed.
| Option | Description | Default | 
|---|---|---|
| Maximum instances to display | The maximum number of type instances to display using the all instances command. Entering zero will always show all of the instances of the selected type in the current VM | 100 | 
| Maximum references to display | The maximum number of type references to display using the all references command. Entering zero will always show all of the references to the selected type in the current VM | 100 |