Java Heap Space Error...

**intenseza** · 03-11-2013, 11:00 PM

Hi All

This is the error I'm getting. It happens when I'm trying to create a 6 dimensional array...

I've changed my config and the properties for the project:

netbeans_default_options="-J-client -J-Xmx1600M -J-Xss2m -J-Xms512m -J-XX:PermSize=500m -J-Dapple.laf.useScreenMenuBar=true -J-Dapple.awt.graphics.UseQuartz=true -J-Dsun.java2d.noddraw=true -J-Dsun.zip.disableMemoryMapping=true"

but still I get...

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

Any ideas?

**jim829** · 03-11-2013, 11:26 PM

Just one. Post your code (and please encapsulate your code between code tags [code][/code]).

Regards,
Jim

**intenseza** · 03-11-2013, 11:35 PM

Java Code:

String[][][][][][] DATA;
    
    ArrayList One = new ArrayList();
    ArrayList Two = new ArrayList();
    ArrayList Three = new ArrayList();
    ArrayList Four = new ArrayList();
    ArrayList Five = new ArrayList();
    ArrayList Six = new ArrayList();
    
    public static void main(String[] args) throws FileNotFoundException {
        new Properties();
    }
    
    
    public Properties() throws FileNotFoundException
    {
        
        LoadData();
        
        DATA = new String[One.size()][Two.size()][Three.size()][Four.size()][Five.size()][Six.size()];
        DatatoDimension();
    }
    
    
    public void LoadData() throws FileNotFoundException
    {
        
        File P = new File("Properties.txt");
        Scanner in = new Scanner(P);
        String Info = (String)in.nextLine();
        
        while (in.hasNext())
        {
            String Line = (String)in.nextLine();
            String[] Content = Line.split("	");
            System.out.println(" ");
            One.add((String)Content[0]);
            Two.add((String)Content[1]);
            Three.add((String)Content[2]);
            Four.add((String)Content[3]);
            Five.add((String)Content[4]);
            Six.add((String)Content[5]);
        }
        
        in.close();
        
    }
    
    
    public void DatatoDimension()
    {
        
        
        // START 1
        for(int i=0; i< DATA.length;i++)
        {
                
            DATA[i][0][0][0][0][0] = (String)(One.get(i));
            
            // START 2
            {
                for(int j=0; j< DATA[i].length;j++)
                {

                    DATA[i][j][0][0][0][0] = (String)(One.get(i));
                    
                    // START 3
                    for(int k=0; k< DATA[i][j].length;k++)
                    {

                        DATA[i][j][k][0][0][0] = (String)(One.get(i));
                        // START 4
                        for(int l=0; l< DATA[i][j][k].length;l++)
                        {

                            DATA[i][j][k][l][0][0] = (String)(One.get(i));
                            // START 5
                            for(int m=0; m< DATA[i][j][k][l].length;m++)
                            {


                                DATA[i][j][k][l][m][0] = (String)(One.get(i));
                             // START 6
                                for(int n=0; n< DATA[i][j][k][l][m].length;n++)
                                {
                                DATA[i][j][k][l][m][n] = (String)(One.get(i));

                                }


                            }

                        }
                    }
                 }
          }
      }
    }

**intenseza** · 03-11-2013, 11:36 PM

Perhaps my approach is redundant, not too sure... I'm trying to implement a 6 dimension data cube

DATA = new String[One.size()][Two.size()][Three.size()][Four.size()][Five.size()][Six.size()];

It doesn't get past that line... so entering data isn't even reached.

Edit: If you'd like to test the sizes, each Dimension is 999.

**jim829** · 03-11-2013, 11:42 PM

It compiles but since I don't have your property file I can't determine what the problem would be. Can you please describe what it is you are trying to do?

Regards,
Jim

**intenseza** · 03-11-2013, 11:55 PM

The property file contains 998 or 999 lines of data.
Suburb Type Nr Rooms Nr Baths Nr Parking Sqr Met Price
X X X X X X X

I want to load this into a 6 dimension datacube.

I'm reading from a textfile and attempting to load it into the Cube.
The problem is, my program won't even create the 6dimension array of size 998, so it doesn't even
reach the code that extracts the data.

Many thanks for your time.

**jim829** · 03-12-2013, 12:19 AM

Well, I would be remiss if I didn't suggest an easier approach. Why not create another class which holds your property values. Then just use a List to hold instances of the class. Of course, I may be missing something. Is there something special you are doing where you require a 6 dimensional array?

Regards,
Jim

**intenseza** · 03-12-2013, 12:25 AM

Thanks for the input :) I'm trying to create a "Data Cube" so that drill downs and various data mining techniques can be used...

**jim829** · 03-12-2013, 01:43 AM

Perhaps my approach is redundant, not too sure... I'm trying to implement a 6 dimension data cube

DATA = new String[One.size()][Two.size()][Three.size()][Four.size()][Five.size()][Six.size()];

It doesn't get past that line... so entering data isn't even reached.

Edit: If you'd like to test the sizes, each Dimension is 999.

I just noticed something from an earlier post of yours. You said that each array is 999. That is the problem! A two dimensional array of 1000 x1000 contains 1,000,000 elements. Yours contains something on the order of 1000^6 or 1 million trillion. It ain't gonna work!

Regards,
Jim

**JosAH** · 03-12-2013, 03:24 PM

Originally Posted by jim829

I just noticed something from an earlier post of yours. You said that each array is 999. That is the problem! A two dimensional array of 1000 x1000 contains 1,000,000 elements. Yours contains something on the order of 1000^6 or 1 million trillion. It ain't gonna work!

I always have to think when I read things like the above: in Dutch (and Britsh English) we use million, milliard, billion, billiard, trillion, trilliard etc. but the tribes on the other side of the pond just use million, billion. trillion etc. it must be something in their drinking water ...

kind regards,

Jos

**jim829** · 03-12-2013, 03:35 PM

I have actually never heard of milliard, billiard, trilliard. I could have said 10^18. And I was too lazy to lookup one quintillion.

Proost!
Jim

**Tolls** · 03-12-2013, 03:42 PM

Originally Posted by jim829

I have actually never heard of ... billiard, .... I could have said 10^18. And I was too lazy to lookup one quintillion.

Proost!
Jim

It's a pool-like game using 3 balls...

**JosAH** · 03-12-2013, 04:48 PM

Originally Posted by jim829

I have actually never heard of milliard, billiard, trilliard. I could have said 10^18. And I was too lazy to lookup one quintillion.

That's because you live on the wrong side of the pond and we live on the right side; so there! ;-P I suspect it's because of Webster and his silly language 'simplification' syndrome ...

Originally Posted by jim829

Proost!
Jim

Zit ie potdoppie nu alweer aan de drank ...

kind regards,

Jos ;-)

**DarrylBurke** · 03-12-2013, 06:12 PM

Originally Posted by JosAH

Zit ie potdoppie nu alweer aan de drank ...

Shouldn't that be grolsch de drank? ;)

**JosAH** · 03-12-2013, 06:37 PM

Originally Posted by DarrylBurke

Shouldn't that be grolsch de drank? ;)

How should I know? I don't know what Jim is boozing at this ungodly hour ... "jenever, the basic nutricient for every healthy breakfast".

kind regards,

Jos ;-)

**jim829** · 03-12-2013, 06:52 PM

Don't you know? It's not booze. It's that nasty American water. :)

Regards,
Jim

**DarrylBurke** · 03-12-2013, 09:49 PM

Eau de Americana?

**intenseza** · 03-14-2013, 07:51 PM

Thanks for the advice. Yeah turns out my array is now 3x2x6x6x4x5 or something. I have a different problem now...

When I iterate through the monster array and display it's contents, I end up with duplicate values being displayed. I'm not sure if it's because I've added duplicate values to the Arrays, although
I'm pretty sure I'm didn't. I explicitly add 999 values. When I iterate through it, I land up with 2322 or so.

Java Code:

for(int i=0; i< DATA.length;i++)
        {
                 
            Sum += DATA[i][0][0][0][0][0].Sum;
            Count += DATA[i][0][0][0][0][0].Count;
            DATA[i][0][0][0][0][0].DisplayItems();
             
            // START 2
            {
                for(int j=0; j< DATA[i].length;j++)
                {
 
                    Sum += DATA[i][j][0][0][0][0].Sum;
                    Count += DATA[i][j][0][0][0][0].Count; 
                    DATA[i][j][0][0][0][0].DisplayItems();
                    // START 3
                    for(int k=0; k< DATA[i][j].length;k++)
                    {
 
                        Sum += DATA[i][j][k][0][0][0].Sum;
                        Count += DATA[i][j][k][0][0][0].Count;
                        DATA[i][j][k][0][0][0].DisplayItems();
                        // START 4
                        for(int l=0; l< DATA[i][j][k].length;l++)
                        {
 
                            Sum += DATA[i][j][k][l][0][0].Sum;
                            Count += DATA[i][j][k][l][0][0].Count;
                            DATA[i][j][k][l][0][0].DisplayItems();
                            // START 5
                            for(int m=0; m< DATA[i][j][k][l].length;m++)
                            {
 
 
                                Sum += DATA[i][j][k][l][m][0].Sum;
                                Count += DATA[i][j][k][l][m][0].Count;
                                DATA[i][j][k][l][m][0].DisplayItems();
                             // START 6
                                for(int n=0; n< DATA[i][j][k][l][m].length;n++)
                                {
                                Sum += DATA[i][j][k][l][m][n].Sum;
                                Count += DATA[i][j][k][l][m][n].Count;
                                DATA[i][j][k][l][m][n].DisplayItems();
                                }
 
 
                            }
 
                        }
                    }
                 }
          }
      }

Any ideas? It seems right...

**SJF** · 03-16-2013, 02:37 AM

Originally Posted by intenseza

Thanks for the advice. Yeah turns out my array is now 3x2x6x6x4x5 or something. I have a different problem now...

When I iterate through the monster array and display it's contents, I end up with duplicate values being displayed. I'm not sure if it's because I've added duplicate values to the Arrays, although
I'm pretty sure I'm didn't. I explicitly add 999 values. When I iterate through it, I land up with 2322 or so.

Java Code:

for(int i=0; i< DATA.length;i++)
        {
                 
            Sum += DATA[i][0][0][0][0][0].Sum;      // An extra 3 additions
            Count += DATA[i][0][0][0][0][0].Count;
            DATA[i][0][0][0][0][0].DisplayItems();
             
            // START 2
            {
                for(int j=0; j< DATA[i].length;j++)
                {
 
                    Sum += DATA[i][j][0][0][0][0].Sum;  // An extra 3x2 (6) additions
                    Count += DATA[i][j][0][0][0][0].Count; 
                    DATA[i][j][0][0][0][0].DisplayItems();
                    // START 3
                    for(int k=0; k< DATA[i][j].length;k++)
                    {
 
                        Sum += DATA[i][j][k][0][0][0].Sum;  // An extra 3x2x6 (36) additions
                        Count += DATA[i][j][k][0][0][0].Count;
                        DATA[i][j][k][0][0][0].DisplayItems();
                        // START 4
                        for(int l=0; l< DATA[i][j][k].length;l++)
                        {
 
                            Sum += DATA[i][j][k][l][0][0].Sum;  // An extra 3x2x6x6 (216) additions
                            Count += DATA[i][j][k][l][0][0].Count;
                            DATA[i][j][k][l][0][0].DisplayItems();
                            // START 5
                            for(int m=0; m< DATA[i][j][k][l].length;m++)
                            {
 
 
                                Sum += DATA[i][j][k][l][m][0].Sum;   // An extra 3x2x6x6x4 (864) additions.... 
                                Count += DATA[i][j][k][l][m][0].Count;
                                DATA[i][j][k][l][m][0].DisplayItems();
                             // START 6
                                for(int n=0; n< DATA[i][j][k][l][m].length;n++)
                                {
                                Sum += DATA[i][j][k][l][m][n].Sum;
                                Count += DATA[i][j][k][l][m][n].Count;
                                DATA[i][j][k][l][m][n].DisplayItems();
                                }
 
 
                            }
 
                        }
                    }
                 }
          }
      }

Any ideas? It seems right...

See my comments next to Sum += lines above.... much simpler example:

Java Code:

		int sum = 0;
		int[][] thing = new int[10][10];
		
		for(int ii = 0; ii < 10; ii++){
			for(int jj=0; jj < 10; jj++){
				thing[ii][jj] = 1;
				sum+=1;
			}
		}
		System.out.println(sum);
		sum = 0;
		
		for(int i = 0; i < 10; i++){
			sum += thing[i][0];						//sum += thing[0][0] on first iteration 
			for(int j = 0; j < 10; j++){
				sum += thing[i][j];					//sum += thing[0][0] on first iteration
			}
		}
		System.out.print(sum);

**intenseza** · 03-16-2013, 11:42 PM

Originally Posted by SJF

See my comments next to Sum += lines above.... much simpler example:

Java Code:

		int sum = 0;
		int[][] thing = new int[10][10];
		
		for(int ii = 0; ii < 10; ii++){
			for(int jj=0; jj < 10; jj++){
				thing[ii][jj] = 1;
				sum+=1;
			}
		}
		System.out.println(sum);
		sum = 0;
		
		for(int i = 0; i < 10; i++){
			sum += thing[i][0];						//sum += thing[0][0] on first iteration 
			for(int j = 0; j < 10; j++){
				sum += thing[i][j];					//sum += thing[0][0] on first iteration
			}
		}
		System.out.print(sum);

Is this only dealing with a 2d array though? I have a 6d array at the moment?

Regards