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Old 08-10-2005, 09:42 AM   #1 (permalink)
abx
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Default Problem with large Strings

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Hi @ll,

I got a Problem with large Strings. I store a lot of Strings in a Vector in Persistent Store. From time to time I need to Mail the results, but I always get an OutOfMemory Error :(
Code:
        // data is the vector
        StringBuffer dataStr = new StringBuffer(130000);
        for (Enumeration el=data.elements(); el.hasMoreElements(); ) {
            dataStr.append((String)el.nextElement() + "\n");
        }
        // own function to send mails
        sendMail("user@domain.tld", "subject", dataStr.toString());
Is there any max size of Strings?

thx,
abx
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Old 08-10-2005, 08:23 PM   #2 (permalink)
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Page 23 of the Developer Guide (vol 1) says to avoid using enumerations as it creates garbage. Maybe dumping the enumeration will help.

Paul
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Old 08-13-2005, 02:57 PM   #3 (permalink)
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I don't know if there is a size limit on StringBuffer().

But, I would strongly argue against sending 130k emails. RIM's recommendation is to limit data transfers to 2k in size.
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Old 08-16-2005, 03:36 PM   #4 (permalink)
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The max size for a String or byte array is 64k.

DaHunter
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Old 08-18-2005, 05:16 AM   #5 (permalink)
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Thx for all answers. I also find the reason in "Memory best practices for the BlackBerry Java Development Environment"
Quote:
Note: Byte arrays cannot be larger than 128 KB on the handheld.
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Old 08-18-2005, 06:48 AM   #6 (permalink)
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Why do you initialize your stringbuffer?
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