I get state below when the size of 2D array more than 2875 x 2875

Exception in thread "main" java.lang.OutOfMemoryError
<<no stack trace available>>

my program must use array size many many but when i use JAVA i have
limited only this. If some one could help I would be very thank full

// This example code that when i change more array size than 2875 i will have
// state <<no stack trace available>>
class arr{
arr(){
JFrame f = new JFrame("arr");
f.setVisible(true);
f.setSize(200,200);

int n = 2875;
double [][] a = new double [n][n];
for(int i = 0;i<n;i++){
for(int j=0;j<n;j++){
a[i][j] = 1.234;
}
System.out.println(i);
}
}
public static void main(String[] s){
new arr();
}
}

Does it run for a while before throwing that exception at you? It looks like you're just running out of physical memory. Java is extremely resource intensive to begin with.

Keep in mind that the elements in the array you are trying to declare take about 32MB of space.

2875 * 2875 * 4 bytes in an int = 33062500 bytes.

This is quite a large amount of ram. If you need to store such a large amount of information, consider writing the data to a file in increments.

Actually DEEP_FX it's twice that figure (32M) again, the array is actaully of doubles not ints, but....

U could also try the -Xm memory switches when u fire up the jvm.

Start mem size:
-XmsNNN where NNN in bytes, kb or MB ie to start with 64M use -Xms64000000 or -Xms64000k or -Xms64m

Maximum mem size:
-XmxNNN (same a above for NNN)

excute me what is -Xms64000000
and how i can use it