The output format of the class-wise statistical information output by the STATIC member statistical functionality is as follows:

Output format

Java Heap Dump Static Profile
-----------------------
________________Size__Instances__Class________________
 <total_size> <Instance_count> <class_name>
 <total_size> <Instance_count> <class_name>
...

Output items

The items listed in the output format are described as follows.

Table 9-8 Output items (STATIC member statistical functionality)

The output example of the class-wise statistical information output by the STATIC member statistical functionality, is described as an example of the following source:

public class static_instance {
 public static void main(String args[]) {
 classA cls_a;
 classB cls_b;
 classC cls_c;
 
 cls_a = new classA();
 cls_b = new classB();
 cls_c = new classC();
 cls_b.cls_c = cls_c;
 cls_a.cls_b = cls_b;
 
 try {
 Thread.sleep(20000);
 } catch (Exception e) {}
 }
}
class classA {
 static classB cls_b;
}
class classB {
 classC cls_c;
}
class classC {
}

The following figure shows the output result of the STATIC member statistical functionality.

Figure 9-4 Output result (STATIC member statistical functionality)

Moreover, there is a difference in the reference relation for the above source in the instance statistical functionality and in the STATIC member statistical functionality and the following figure shows this difference.

Figure 9-5 Difference in reference relation in the instance statistical functionality and in the STATIC member statistical functionality

The reference relation of the respective functionality is as follows:

• Reference relation of the instance statistical functionality
  Instance variable cls_b of Instance A ->Instance variable cls_c of instance B -> Instance C
  
• Reference relation of the STATIC member statistical functionality
  Class variable cls_b of class A ->Instance variable cls_c of instance B -> Instance C