Unreachable catch classes

Joe Darcy joe.darcy at oracle.com
Wed Apr 27 01:53:23 UTC 2011


Hello.

FYI, javac in JDK 7 does a more precise analysis than before on what 
catch blocks can actually be reached and warnings are issued for 
unreachable catch blocks.  I've extracted those warnings from a recent 
full JDK build in case anyone wants to update the code in question.

-Joe

../../../../../../src/share/classes/com/sun/corba/se/impl/protocol/BootstrapServerRequestDispatcher.java:124: 
warning: unreachable catch clause
        } catch (java.lang.Exception ex) {
          ^
  thrown type RuntimeException has already been caught

../../../../../../src/share/classes/com/sun/corba/se/impl/protocol/BootstrapServerRequestDispatcher.java:124: 
warning: unreachable catch clause
        } catch (java.lang.Exception ex) {
          ^
  thrown type RuntimeException has already been caught

../../../src/share/classes/java/util/concurrent/ThreadPoolExecutor.java:1115: 
warning: unreachable catch clause
                    } catch (Throwable x) {
                      ^
  thrown types RuntimeException,Error have already been caught
../../../src/share/classes/java/net/DatagramSocket.java:183: warning: 
unreachable catch clause
        } catch(IOException e) {
          ^
  thrown type SocketException has already been caught
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
2 warnings

../../../src/share/classes/java/security/cert/X509CertSelector.java:2217: 
warning: unreachable catch clause
        } catch (CertificateException e3) {
          ^
  thrown types 
CertificateNotYetValidException,CertificateExpiredException have already 
been caught

../../../src/share/classes/javax/management/modelmbean/RequiredModelMBean.java:1220: 
warning: unreachable catch clause
        } catch (Exception e) {
          ^
  thrown types 
InvocationTargetException,IllegalAccessException,RuntimeException have 
already been caught
1 warning

../../../../src/share/classes/sun/security/rsa/RSASignature.java:205: 
warning: unreachable catch clause
        } catch (GeneralSecurityException e) {
          ^
  thrown type BadPaddingException has already been caught





More information about the core-libs-dev mailing list