Outofmemoryerror: Java heap space

Question

Outofmemoryerror: Java heap space

Asked 10 years, 8 months ago

Viewed 233 times

1

I have the following code:

class Main {
    public static void main(String[] args) {
        Lista chamar = new Lista();
        String[] vetor = {"Palavra", "Letra"};
        chamar.adicionar(vetor);
    }
}
class Lista {
    ArrayList<String> lista;
    public Lista() {
        lista = new ArrayList<>();
    } public void adicionar(String[] vetor) {
        int i = 0;
        while (i < vetor.length) {
            lista.add(vetor[i]);
            i++;
        }
    }
}

When I run, the error "Outofmemoryerror: Java heap space" appears, I wonder how to fix it.

This error is independent of your code: it depends on how Java runs. How you are running this code?

– Leonel Sanches da Silva

2014/04/12 at 17:34
Debugging by Netbeans.

– ptkato

2014/04/12 at 17:58
this code compiles?? your constructor is wrong.. I don’t think that’s the code you’re running.

– Math

2014/04/12 at 18:51
Yeah, compile it, @Math.

– ptkato

2014/04/12 at 18:52
@Patrick man, I opened the IDE and here does not compile, missing the () in his builder

– Math

2014/04/12 at 18:53
Oh yes, I forgot that detail.

– ptkato

2014/04/12 at 18:53
Okay, I fixed here and I circled, and it didn’t burst the memory. There’s nothing more divergent than what you posted and what you’re running from?

– Math

2014/04/12 at 18:55
No, it might be the computer, because isn’t it always that this error happens? I am using a Windows 8 64bit on a pc with 1GB of RAM.

– ptkato

2014/04/12 at 19:29

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2 answers

4

Since there is no error in the code maybe the problem is in the size of the heap space java.

As your machine has only 1 GB of RAM the default size of the heap Java may be too small.

Try to increase heap size in project options in Netbeans:

Right click on your project and choose "Estates"
Select the category "Execute"
Typo -Xmx128m in the field "Options of the VM"

-Xmx128m tells VM to run with 128 MB of heap space, you can change this value to more (-Xmx256m) or less (-Xmx64m) as needed.

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by hugoaguiar31 • 11 points · Answer 1 · 2014-04-14T17:17:23+00:00

Make sure you have write permissions in the/drive directory where Netbeans is installed. This Outofmemoryerror can happen in installations where the user running Netbeans does not have many permissions on the machine.