One question about Java Programming - 未名空间MITBBS历史存档

One question about Java Programming# Java - 爪哇娇娃

x*y2006-04-03 07:04

1 楼

hi,
I am writing an Applet file A.java using Java. I put A.java in the linux
operating system and use IE to run the applet.
My question is:
in A.java, there is one line:
JButton increase = new JButton (new ImageIcon ("increase.gif"));
I do have increase.gif at the same directory of A.java. However, when I run
this applet, I got :
java.security.AccessControlException: access denied (java.io.FilePermission
increase.gif read)
What is wrong?
Thanks for the information

o*g2006-04-03 07:04

2 楼

说实话，这个东西很少有人用的。
检查一下文件属性。

(

【在 x****y 的大作中提到】

: hi,
: I am writing an Applet file A.java using Java. I put A.java in the linux
: operating system and use IE to run the applet.
: My question is:
: in A.java, there is one line:
: JButton increase = new JButton (new ImageIcon ("increase.gif"));
: I do have increase.gif at the same directory of A.java. However, when I run
: this applet, I got :
: java.security.AccessControlException: access denied (java.io.FilePermission
: increase.gif read)

g*g2006-04-03 07:04

3 楼

you can't do this, try to read it as a stream.

【在 x****y 的大作中提到】

: hi,
: I am writing an Applet file A.java using Java. I put A.java in the linux
: operating system and use IE to run the applet.
: My question is:
: in A.java, there is one line:
: JButton increase = new JButton (new ImageIcon ("increase.gif"));
: I do have increase.gif at the same directory of A.java. However, when I run
: this applet, I got :
: java.security.AccessControlException: access denied (java.io.FilePermission
: increase.gif read)

w*r2006-04-03 07:04

4 楼

security violation... cannot do this, applet cannot access local file system.
has to read the icon from a stream on server side.

【在 x****y 的大作中提到】

: hi,
: I am writing an Applet file A.java using Java. I put A.java in the linux
: operating system and use IE to run the applet.
: My question is:
: in A.java, there is one line:
: JButton increase = new JButton (new ImageIcon ("increase.gif"));
: I do have increase.gif at the same directory of A.java. However, when I run
: this applet, I got :
: java.security.AccessControlException: access denied (java.io.FilePermission
: increase.gif read)

x*y2006-04-03 07:04

5 楼

Hi,
Thanks for your reply.
I forgot to mention that: A.java and increase.gif are put in a linux server (
Fedora), and I access it from another machine...
Thanks,

o*g2006-04-03 07:04

6 楼

如果你是双击某个文件，来让他运行的，我不知道答案。
如果不是，increase.gif应该在服务器端。

【在 x****y 的大作中提到】

: hi,
: I am writing an Applet file A.java using Java. I put A.java in the linux
: operating system and use IE to run the applet.
: My question is:
: in A.java, there is one line:
: JButton increase = new JButton (new ImageIcon ("increase.gif"));
: I do have increase.gif at the same directory of A.java. However, when I run
: this applet, I got :
: java.security.AccessControlException: access denied (java.io.FilePermission
: increase.gif read)