browsing java sites
hi to all still confused. as browsing to this site http://www.anfyteam.com/anj/anfybutton/anbutton.html i got this error messages... //== Java VM version: 1.4.1_01 Java VM vendor: Sun Microsystems Inc. java.security.AccessControlException: access denied (java.net.SocketPermission www.anfyteam.com resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:270) at java.security.AccessController.checkPermission(AccessController.java:401) at java.lang.SecurityManager.checkPermission(SecurityManager.java:542) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1042) at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:461) at sun.awt.SunToolkit.getImage(SunToolkit.java:504) at anfybutton.b(anfybutton.java) at anfybutton.a(anfybutton.java) at anfybutton.c(anfybutton.java) at anfybutton.a(anfybutton.java) at anfybutton.c(anfybutton.java) at anfybutton.init(anfybutton.java) at org.kde.kjas.server.KJASAppletStub.initApplet(KJASAppletStub.java:145) at org.kde.kjas.server.KJASAppletStub$1.run(KJASAppletStub.java:98) at java.lang.Thread.run(Thread.java:536) //=== but if I will make my own applet with a JLabe and a JButton on it, it will normally show up... so it means that i successfully installed java in it.. but why do i have these error messages.. do i have to set another configuration file in linux? thanks in advance... kent -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Runtime.maxMemory()
What does Runtime.maxMemory() return exactly? I have this program:
public class MaxMemory{
private static String uft(){
Runtime rt = Runtime.getRuntime();
long free = rt.freeMemory(), total = rt.totalMemory(), used = total - free;
long max = rt.maxMemory();
java.text.NumberFormat nf = java.text.NumberFormat.getInstance() ;
return "used: "+nf.format(used)+" free: "+nf.format(free)+
" total: "+nf.format(total)+" max: "+nf.format(max);
}
public static void main(String[] args){
System.out.println("before we start: "+uft());
java.util.HashSet al = new java.util.HashSet(1024);
int i = 0;
byte[] barrier = new byte[2048];
while(true) try{
al.add(new byte[1024]);
i++;
} catch(OutOfMemoryError e){
barrier = null;
break;
}
System.out.println("after "+i+"k "+uft());
}
} // MaxMemory
When I run it I get:
[EMAIL PROTECTED] ] java MaxMemory
before we start: used: 318,832 free: 1,712,784 total: 2,031,616 max: 134,217,728
after 61993k used: 66,649,312 free: 800 total: 66,650,112 max: 134,217,728
[EMAIL PROTECTED] ] java -Xmx128m MaxMemory
before we start: used: 318,832 free: 1,712,784 total: 2,031,616 max: 201,326,592
after 123587k used: 133,233,920 free: 768 total: 133,234,688 max: 201,326,592
[EMAIL PROTECTED] ] java -version
java version "1.4.1_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_02-b06)
Java HotSpot(TM) Client VM (build 1.4.1_02-b06, mixed mode)
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Re: Runtime.maxMemory()
Joseph Shraibman wrote: What does Runtime.maxMemory() return exactly? With further testing it appears to return exactly 64meg over the true limit. Also when doing java -Xmx3m the real value used is actuall 4 megs, and it appears all odd values are rounded up 1. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: browsing java sites
Applets have security constraints. For instance they can only connect to the server they came from. kent_mdk wrote: hi to all still confused. as browsing to this site http://www.anfyteam.com/anj/anfybutton/anbutton.html i got this error messages... //== Java VM version: 1.4.1_01 Java VM vendor: Sun Microsystems Inc. java.security.AccessControlException: access denied (java.net.SocketPermission www.anfyteam.com resolve) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:270) at java.security.AccessController.checkPermission(AccessController.java:401) at java.lang.SecurityManager.checkPermission(SecurityManager.java:542) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1042) at sun.awt.SunToolkit.getImageFromHash(SunToolkit.java:461) at sun.awt.SunToolkit.getImage(SunToolkit.java:504) at anfybutton.b(anfybutton.java) at anfybutton.a(anfybutton.java) at anfybutton.c(anfybutton.java) at anfybutton.a(anfybutton.java) at anfybutton.c(anfybutton.java) at anfybutton.init(anfybutton.java) at org.kde.kjas.server.KJASAppletStub.initApplet(KJASAppletStub.java:145) at org.kde.kjas.server.KJASAppletStub$1.run(KJASAppletStub.java:98) at java.lang.Thread.run(Thread.java:536) //=== but if I will make my own applet with a JLabe and a JButton on it, it will normally show up... so it means that i successfully installed java in it.. but why do i have these error messages.. do i have to set another configuration file in linux? thanks in advance... kent -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- Joseph Shraibman [EMAIL PROTECTED] Increase signal to noise ratio. http://xis.xtenit.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
