16f6c0aecf
Inline adoc files when they are included exactly once. Also fix language tags because this inlining gives us better information on what language the code is written in.
54 lines
1.2 KiB
Plaintext
54 lines
1.2 KiB
Plaintext
== Why is this an issue?
|
|
|
|
Multiple catch blocks of the appropriate type should be used instead of catching a general exception, and then testing on the type.
|
|
|
|
|
|
=== Noncompliant code example
|
|
|
|
[source,java]
|
|
----
|
|
try {
|
|
/* ... */
|
|
} catch (Exception e) {
|
|
if(e instanceof IOException) { /* ... */ } // Noncompliant
|
|
if(e instanceof NullPointerException{ /* ... */ } // Noncompliant
|
|
}
|
|
----
|
|
|
|
|
|
=== Compliant solution
|
|
|
|
[source,java]
|
|
----
|
|
try {
|
|
/* ... */
|
|
} catch (IOException e) { /* ... */ } // Compliant
|
|
} catch (NullPointerException e) { /* ... */ } // Compliant
|
|
----
|
|
|
|
|
|
== Resources
|
|
|
|
* https://wiki.sei.cmu.edu/confluence/display/java/ERR51-J.+Prefer+user-defined+exceptions+over+more+general+exception+types[CERT, ERR51-J.] - Prefer user-defined exceptions over more general exception types
|
|
|
|
|
|
ifdef::env-github,rspecator-view[]
|
|
|
|
'''
|
|
== Implementation Specification
|
|
(visible only on this page)
|
|
|
|
=== Message
|
|
|
|
Replace the usage of the "instanceof" operator by a catch block.
|
|
|
|
|
|
'''
|
|
== Comments And Links
|
|
(visible only on this page)
|
|
|
|
=== on 16 Aug 2013, 08:27:16 Freddy Mallet wrote:
|
|
Is implemented by \http://jira.codehaus.org/browse/SONARJAVA-292
|
|
|
|
endif::env-github,rspecator-view[]
|