How can I start an Java applet with more memory?

Question

The default 64 MB max heap memory can be small for a large Java application. Are there any applet parameter to increment this for a signed applet?

For a Java program this is a simple command line parameter but how this work for an applet in the browser.

You need to be a bit more specific about the environment you are running in. — Bill Michell, Sep 19 '08 at 14:04

score 10 · Accepted Answer · edited Nov 13 '12 at 13:22

10

The new plugin architecture in JDK6u10 supports this. Prior to that, the only way to do it was in the Java control panel.

edited Nov 13 '12 at 13:22

MvG

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answered Sep 19 '08 at 14:55

jsight

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"The new plugin architecture in JDK6u10 supports this, but obviously thats only at the RC stage right now." It's out now. :) – hishadow Nov 25 '08 at 20:35

score 5 · Answer 2 · answered Sep 19 '08 at 14:07

Use the JavaConsole -> Java -> Java Applet Runtime settings to define the initial and maximum memory allocation (using -Xms128 -Xmx512 or similar).

I understand that newer versions of Java (6?) allow the developer some influence over these settings but I haven't been there yet...

score 2 · Answer 3 · edited Jun 08 '12 at 10:00

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Add to the JNLP file the below lines in "resources"

j2se version="1.6+" initial-heap-size="256m" max-heap-size="1024m"
    href="http://java.sun.com/products/autodl/j2se" /"

edited Jun 08 '12 at 10:00

Andrew Thompson

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answered Nov 10 '10 at 21:24

Mayur

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score 1 · Answer 4 · answered Aug 05 '09 at 07:23

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There is possibility to change this value, by setting paramether in example It works since java1.6.0_10 details at https://jdk6.dev.java.net/plugin2/

answered Aug 05 '09 at 07:23

score 1 · Answer 5 · answered Oct 09 '08 at 13:28

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Actually, starting the applet inside Java Web Start (JNLP) lets you specify the same memory constraints that you would for a conventional Java application. (Xms and Xmx).

JNLP supports applets by default, so no code changes are required in most cases.

answered Oct 09 '08 at 13:28

Jason Kealey

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The problem with JNLP is that you can not start the application embedded in the html page. – Horcrux7 Oct 12 '08 at 20:14

score -1 · Answer 6 · answered Jun 11 '15 at 11:52

It can be done through a couple of ways:

i) By either increasing the Xms, Xmx and Xmn values along with MaxPermSize java arguments in java control panel; and/or

ii) by adding a java_arguments PARAM tag to OBJECT tag in jsp/html:

This link throws more light on this: http://technoguider.com/2015/06/memory-requirements-for-an-applet/

score -3 · Answer 7 · answered Sep 19 '08 at 14:06

-3

Not that I know for certain, it's been a long time since I wrote applets, but I don't think you can set this from the applet.

Apparently, you can set the JVM's heap size for the browser's JVM from the Java plug-in control panel, but that's something the user has to do before starting your applet.

You can always check http://forums.sun.com/thread.jspa?threadID=523105&messageID=3033288 for more discussion on the topic.

answered Sep 19 '08 at 14:06

Liedman

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the link you say "You can always check" is dead - http://forums.sun.com/thread.jspa?threadID=523105&messageID=3033288 – gnat Oct 13 '11 at 12:19

How can I start an Java applet with more memory?

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