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Doubt in GC

maha devan
Ranch Hand

Joined: Mar 16, 2004
Posts: 50
This is one of DANS question

class I {
private String name;
public void finalize() {System.out.print(name);}
public I(String s) {name = s;}
}
class J {
private static void m1(I[] a1) {
a1[0] = a1[1] = a1[2] = null;
}
public static void main (String[] args) {
I[] a1 = new I[3]; // 1
a1[0] = new I("A"); // 2
a1[1] = new I("B"); // 3
a1[2] = new I("C"); // 4
m1(a1);
System.gc();
}}

After method m1 returns, the object created on which line is not eligible for garbage collection?


In this //1 is the answer'

How is this , in the first line actually we create an array of size 3 that can hold types of I and in consutive lines we add the reference information to array. Can anybody explain whats happening in the //1 line

Thanks
Shilpi M Ag
Ranch Hand

Joined: May 07, 2004
Posts: 40
Hi

The object on line 1 is an array object. So even if you make the individual objects null, the actual array object is not null

Hope that helps

Shilpi
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Doubt in GC
 
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