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<TITLE>Printing Security System Trace Messages
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<h3>
e193.
Printing Security System Trace Messages</h3>
By setting the system property <code>java.security.debug</code> to <code>all</code>,
the security system will print details of security related calls. The
value <code>all</code> prints all available debugging information. For finer
control of what is printed, see:
<pre>
http://java.sun.com/j2se/1.4/docs/guide/plugin/developer_guide/debugger.html#jsdp
</pre>
Here's an example of setting the system property on the command line:
<pre>
java -Djava.security.debug=all <font color="#0066ff"><i>MyApp</i></font>
</pre>
Here's a sample of trace messages:
<pre>
access: access allowed (java.io.FilePermission c:\file1 read)
access: access allowed (java.io.FilePermission c:\file2 write)
access: access denied (java.util.PropertyPermission user.home read)
Exception in thread "main" java.security.AccessControlException: access denied (
java.util.PropertyPermission user.home read)
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.checkPropertyAccess(SecurityManager.java:1291)
at java.lang.System.getProperty(System.java:572)
at MyApp.main(MyApp.java:50)
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Related Examples
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e194. <a class="eglink" href="ListServices.html?l=rel">
Listing All Available Cryptographic Services
</a>
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e195. <a class="eglink" href="ListSecureRnd.html?l=rel">
Listing All Available Secure Random Number Generators
</a>
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e196. <a class="eglink" href="CreateSecureRandom.html?l=rel">
Generating a Secure Random Number
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See also:
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Key%20Store">
Key Store
</a>
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Message%20Digests">
Message Digests
</a>
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Permissions">
Permissions
</a>
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Policy%20Files">
Policy Files
</a>
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Public%20and%20Private%20Keys">
Public and Private Keys
</a>
<a class="eglink" href="/egs/java.security/pkg.html?l=rel#Signatures">
Signatures
</a>
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