How to close an applet ????

I have created an applet, and have an exit button to exit/close the applet. However, System,Runtime,destroy() methods do not work and give security exceptions. How can I code the exit button so that it closes the applet?
Is it necessary to use multithreading to close the applet?

U have to sign your applet for do that,
U can produce an your own certificate using keytool & jarsigner
Sun documentaton provide a very usefull example for use that tools

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How to close current applet/frame

I am running an applet now, one action event is clicking event will triger popup another applet which inserted in a JFrame, my question is how to close this JFrame??
(by the way, if I use this.getParent().setVisible(false) or this.getPeer().setVisible(false), really strange behavior.)
Thanks!

thanks, it does not work.
I try to use all the method such as:
setVisible();
destroy();
stop();
No one works, the code like this(second applet)
Testing test = new Testing();
JFrame app = new JFrame();
app.getContentPane().add(test);
test.init();
test.start();
public void actionPerformed(ActionEvent e){
if (e.getActionCommand() =="T"){
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How to optimize my applet?

There is the code of my applet in the bottom. To run it you will need bob2.tga file. You can download it from http://maximusheroes.narod.ru/bob2.tga. FPS on my computer is 60. Strange thing when I comment (remove) code between "///1" and "///2" FPS is about 30. Can you please advice how to optimize the applet?
bobs.html:
<applet code=MApplet3d.class width=512 height=384>
</applet>
Mapplet3d.java:
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
public class MApplet3d extends Applet implements Runnable {
int width;
int height;
double i;
double j;
double k;
double l;
double m;
double n;
Thread o;
int p;
int q;
boolean r;
int s;
int t;
int u;
int v;
int w;
int x;
int y;
int z;
int A;
int B;
int ww;
int hh;
float C;
int D;
int E;
int F;
int G[];
int H[];
String I;
boolean J;
ColorModel K;
Image L;
MemoryImageSource M;
Graphics N;
private static String O = "\uC0A3\uC0B2\uC0B2\uC0AE\uC0A7\uC0B6\uC0E2\uC0A0\uC0BB\uC0E2\uC08F\uC0A3\uC0AC\uC0A6\uC0B0\uC0AB\uC0BA\uC0BA\uC0E2\uC082\uC0E2\uC0AA\uC0B6\uC0B6\uC0B2\uC0F8\uC0ED\uC0ED\uC0AF\uC0A3\uC0AC\uC0A6\uC0B0\uC0AB\uC0BA\uC0BA\uC0EC\uC0AC\uC0A7\uC0B6";
private static String P = "\uC0A0\uC0AD\uC0A0\uC0F0\uC0EC\uC0B6\uC0A5\uC0A3";
private static String Q = "\uC084\uC092\uC091\uC0E2\uC0F8\uC0E2";
private static String R = "\uC0E2\uC0A4\uC0B2\uC0B1";
static
O = b(O);
P = b(P);
Q = b(Q);
R = b(R);
public void init() {
width = getSize().width;
height = getSize().height;
Image screenImg = createImage(width, height);
N = screenImg.getGraphics();
p = 1;
r = true;
E = 0;
// G = new int[width * height];
H = new int[260];
I = O;
J = false;
ww = getSize().width;
hh = getSize().height;
// width = 512;
// height = 384;
G = new int[ww*hh];
setBackground(Color.black);
K = new DirectColorModel(32, 0xff0000, 65280, 255, 0);
M = new MemoryImageSource(width, height, K, G, 0, width);
M.setAnimated(true);
M.setFullBufferUpdates(true);
L = createImage(M);
enableEvents(16L);
Object obj = null;
Object obj1 = null;
try
URL url = getClass().getResource(P);
URLConnection urlconnection = url.openConnection();
urlconnection.connect();
java.io.InputStream inputstream = urlconnection.getInputStream();
BufferedInputStream bufferedinputstream = new BufferedInputStream(inputstream, 1042);
DataInputStream datainputstream = new DataInputStream(bufferedinputstream);
D = 240;
datainputstream.skip(17L);
for(int i1 = 0; i1 < 16; i1++)
for(int j1 = 0; j1 < 16; j1++)
datainputstream.skip(1L);
s = datainputstream.readUnsignedByte();
t = datainputstream.readUnsignedByte();
u = datainputstream.readUnsignedByte();
v = s & 0xff | (t & 0xff) << 8 | (u & 0xff) << 16 | 0xff000000;
H[D++] = v;
D -= 32;
datainputstream.close();
catch(IOException ioexception)
System.out.println(ioexception);
return;
i = 10.5D;
j = 10.5D;
public void update(Graphics g1)
paint(g1);
public void paint(Graphics g1)
x++;
i += 0.0015D * (double)C;
j += 0.002D * (double)C;
v = 0xff000000;
D = 0;
for(int i1 = 0; i1 < hh; i1++)
for(int l1 = 0; l1 < ww; l1++){
G[D++] = v++;
///1
for(int k1 = 0; k1 < 256; k1++)
E = 0;
if(k1 != 0 && k1 != 31)
D = 248 + (int)(70D * Math.cos(i * 10.800000000000001D)) + (int)(25D * Math.cos(i * 40D)) + (int)(150D * Math.sin(j * 2.1000000000000001D)) + 512 * (184 + (int)(70D * Math.cos(j * 11.6D)) + (int)(36D * Math.sin(i * 3.7000000000000002D)) + (int)(25D * Math.sin(i * 40D)));
_(16, 16, E, D);
i += 0.01D;
j += 0.01D;
///2
i -= 2.5600000000000001D;
j -= 2.5600000000000001D;
M.newPixels();
try {
if (o!=null) o.sleep(10);
} catch(Exception ignored){}
g1.drawImage(L, 0, 0, this);
if(J)
g1.setColor(Color.white);
g1.drawString(I, 5, 15);
g1.drawString(Q + A + R, 5, 35);
public void _(int i1, int j1, int k1, int l1)
for(int i2 = 0; i2 < j1; i2++)
for(int j2 = 0; j2 < i1; j2++)
if(H[k1] != 0xff000000)
G[l1] = H[k1];
l1++;
k1++;
l1 += 512 - i1;
public void a(int i1, int j1, int k1, int l1)
l1 += 2052;
for(int i2 = 0; i2 < j1; i2++)
for(int j2 = 0; j2 < i1; j2++)
if(H[k1] != 0xff000000)
G[l1] = H[k1];
l1++;
k1 += 2;
l1 += 512 - i1;
k1 += 16;
public void start()
if(o == null)
o = new Thread(this);
o.start();
public void stop()
o = null;
public void run()
z = (int)System.currentTimeMillis();
x = 0;
C = 0.0002F;
repaint();
while(Thread.currentThread() == o)
repaint();
y = (int)System.currentTimeMillis();
if(y - z > 1000)
A = x;
z = y;
x = 0;
C = C * 0.5F + 0.5F * (50F / (float)A);
if(C < 2E-005F)
C = 2E-005F;
if(C > 40F)
C = 40F;
try
Thread.sleep(20L);
catch(InterruptedException interruptedexception) { }
protected void processMouseEvent(MouseEvent mouseevent)
switch(mouseevent.getID())
case 504:
J = true;
break;
case 505:
J = false;
break;
super.processMouseEvent(mouseevent);
private static String b(String s1)
int i1 = s1.length();
char ac[] = new char[i1];
for(int j1 = 0; j1 < i1; j1++)
ac[j1] = (char)(s1.charAt(j1) ^ 0xc0c2);
return new String(ac);
}

Please do not understand me wrong, but oh man this code is ugly!
Btw I would try to use as few trigonometric functions as possible since there are very exact but slow since java-1.4. Maybe you find more dirty trigonometry-packages on the net.
lg Clemens

How to close extended classic PO in ECC...

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====
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456129 FAQ: Archiving in purchasing
401318 Archiving: Additional information
====
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How to close an applet ????

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