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I want to run this program...

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park jung gyu

Posts: 1
Nickname: dalant19
Registered: Apr, 2005

I want to run this program...

Posted: Apr 14, 2005 12:04 AM

import java.lang.reflect.*;

public class ReflectSecurity{
public static void main(String[] args){
try{

ReflectPermission rp = new ReflectPermission("suppressAccessChecks");

SecurityManager sm = System.getSecurityManager();

sm.checkPermission(rp);

TwoString ts = new TwoString("a", "b");

Field f = ts.getClass().getDeclaredField("m_s1");

f.setAccessible(true);

System.out.println(f.get(ts));

}
catch (Exception e){
e.printStackTrace();
}
}
}

I typed
"java -Djava.security.manager ReflectSecurity" to console.

This result is

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\reflection>java -Djava.security.m
anager ReflectSecurity
java.security.AccessControlException: access denied (java.lang.reflect.ReflectPe
rmission suppressAccessChecks)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at ReflectSecurity.main(ReflectSecurity.java:10)

======================
I think that the reason is a security problem.
please help me.

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