another garbage collection question

[srinivas sridaragaddi]

   
class B{
private String name;
public B(String s){name=s;}
public void finalize(){System.out.println(name);}
}
class grab{
public static void m(){
B x1=new B("x");
B y1=new B("y");
}
public static void main(String args[]){
m();
System.gc();
}
} 

output:

here it is printing yx.i did not understand why it is printing x here because when system.gc() is called only at that time finalize() method is called and hence name contains y so y should be printed what is happening here??

[Burkhard Hassel]

Howdy,

there are two local objects in method m. When the method is done, both are eligible for GC, and the output just shows that.


Yours,
Bu.

[swati cha]

why it is printing in the order yx ,not in xy?
can you explain it..

[ahmed yehia]

If you add another object in method m() eg B z=new B("z"); as last.
Output will be z y x. So probably thats how GC delete objects as kind LIFO last created first destroyed, but I m not sure.

[Geetha Arthanari]

Can you please check the output of this code. Output is x y (Not y x)

[Burkhard Hassel]

Seems to be system dependent?
In my windoze I get the
y
x

as Swati said.

Perhaps try this as well:

class Asdf {
static void m() {
for (char c=65; c<(65+26); c++) {
new B( "" + c );
System.out.println("new with " + c);
}
}
public static void main(String[] args) {
m();
System.gc();
}
}

Asdf needs your B-class.
Output:
new with A
new with B
new with C
(...)
new with Y
new with Z
Z
Y
X
W
(...)
C
B
A


Yours,
Bu.