Cannot Resolve Symbol: Runtime.getRuntime().gc()

Hi
I'm a Java noob, and this is driving me insane trying to get this working, I'm trying to invoke garbage collection with:
Runtime.getRuntime().gc();
but on compiling I get the error:
------- Compiler says -------
Scroller.java -> line 50
cannot resolve symbol
symbol : method gc ()
location: class java.lang.Runtime
Any ideas?
Thanks

rmanchigiah wrote:
Yes, I understand that the JVM clears the garbage automatically, But would'nt calling the gc() method amount to invoking the gc, albeit phrased differently. A scenario , i have encountered - where the gc method is called( or invoked) is when a user is logging out of a session and the application continues to run... So, we would effectively be requesting the JVM to collect garbage if it has'nt already done so... And this is something i am not too sure about , i have a faint memory of reading something about programatically collecting garbage in ways that are more efficient than the JVM implementation...The application (I assume you mean a Swing or AWT program) will only continue to run if there is at least one non-daemon thread left running. Garbage collection will not change this.

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    C:\tomcat4118\common\lib\tools.jar;
    C:\j2sdk14003\lib\tools.jar;
    C:\tomcat4118\ant141\lib\servlet.jar;
    C:\tomcat4118\ant141\lib\jaxp.jar;
    C:\tomcat4118\ant141\lib\crimson.jar;
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    C:\mysql\jdbc_dvr\mm.mysql.jdbc-1.2c;
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    C:\Tomcat4118\src\webapps\helloblackjack\src\myblackjackpackage\BlackjackDAO
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    C:\Tomcat4118\src\webapps\helloblackjack\src\myblackjackpackage\BlackjackSer
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    C:\Tomcat4118\src\webapps\helloblackjack\src\myblackjackpackage\Player.java
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    BUILD FAILED
    C:\Tomcat4118\src\webapps\helloblackjack\build.xml:212: Compile failed, messages
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    at org.apache.tools.ant.Project.executeTarget(Project.java:601)
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    at org.apache.tools.ant.Main.runBuild(Main.java:454)
    at org.apache.tools.ant.Main.start(Main.java:153)
    at org.apache.tools.ant.Main.main(Main.java:176)
    Total time: 1 second
    C:\Tomcat4118\src\webapps\helloblackjack>

    yes!
    early on i tried: BlackjackDAO.addPlayer(request, response);
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    Oooops ... violated....
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    3) Check out this for understanding PATH & CLASSPATH http://www.geocities.com/gaurav007_2000/java/
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    5) Finally forgive any goof up on this reply, I have looked at source code after 12 months of hibernation post dot com doom ... so m a bit rusty... shall get better soon though :)
    warm regards and good wishes,
    Gaurav
    CW :-> Mother of all computer languages.
    I HAM ( Radio-Active )
    * OS has no significance in this error
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    Moojjoo MCP, MCTS
    MCP Virtual Business Card
    http://moojjoo.blogspot.com

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    Moojjoo MCP, MCTS
    MCP Virtual Business Card
    http://moojjoo.blogspot.com

  • Getting error message Cannot Resolve Symbol when trying to compile a class

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    A:\Ploid2.java:118: cannot resolve symbol
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