[java] DUMPING MEMORY!!!!

quote:

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image = createImage(2500,2500);

image = createImage(2500,2500); // generates an error

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Set the image field to null before the second image creation, that should allow the garbage collector to deallocate the first image object. Setting the veryHuge field to null before the second array creation should also work for your second example.

Which Java version are you using? One would think some JVMs should be able to handle this internally...

wow!!!
thanx a lot man!!

it works!!! u save me!!

i use JDK 1.4.1
how could i never think bout that!??
by the way, why i got that error!?!
i see my task manager, i still have much free memory,
it is indeed that the image creation takes up to 70,000 K
but i still have 400,000 K free memory!!
so why it generates an error!? i don''t get it!?

anyway, still about memory
which is good between this:

public class Test {
int[][] map;
public void setMap() {
map = new int[100][100];
}
in here i only make one Test instance( Test a = new Test() ), then use setMap to set map variable( a.setMap() )

or :

public class Test {
public Test() {
int[][] map = new int[100][100];
}
}
i must make Test instance everytime to setting map variable
( Test a = new Test() )

the main class like this:

public class Engine {
//Test a;
public Engine() {
//a = new Test();
}
public void setMap() {
Test a = new Test();
//a.setMap();
}
}


thank you very much man!!!

Best Regards,

i could be wrong but i''d say theres a setting somewhere for the JVM that specifies how much memory it''s allowed to use, so even though you''ve got 400MB free the JVM might only be limited to using 100MB

at a guess, anyway....