Examples of org.apache.commons.lang.exception.NestableException

Package org.apache.commons.lang.exception

Examples of org.apache.commons.lang.exception.NestableException

org.apache.commons.lang.exception.NestableException

The base class of all exceptions which can contain other exceptions. It is intended to ease the debugging by carrying on the information about the exception which was caught and provoked throwing the current exception. Catching and rethrowing may occur multiple times, and provided that all exceptions except the first one are descendants of NestedException, when the exception is finally printed out using any of the printStackTrace() methods, the stack trace will contain the information about all exceptions thrown and caught on the way.

Running the following program

 1 import org.apache.commons.lang.exception.NestableException; 2 3 public class Test { 4     public static void main( String[] args ) { 5         try { 6             a(); 7         } catch(Exception e) { 8             e.printStackTrace(); 9         } 10      } 11 12      public static void a() throws Exception { 13          try { 14              b(); 15          } catch(Exception e) { 16              throw new NestableException("foo", e); 17          } 18      } 19 20      public static void b() throws Exception { 21          try { 22              c(); 23          } catch(Exception e) { 24              throw new NestableException("bar", e); 25          } 26      } 27 28      public static void c() throws Exception { 29          throw new Exception("baz"); 30      } 31 }

Yields the following stack trace:

 org.apache.commons.lang.exception.NestableException: foo at Test.a(Test.java:16) at Test.main(Test.java:6) Caused by: org.apache.commons.lang.exception.NestableException: bar at Test.b(Test.java:24) at Test.a(Test.java:14) ... 1 more Caused by: java.lang.Exception: baz at Test.c(Test.java:29) at Test.b(Test.java:22) ... 2 more

@author Rafal Krzewski @author Daniel Rall @author Kasper Nielsen @author Steven Caswell @since 1.0 @version $Id: NestableException.java 161243 2005-04-14 04:30:28Z ggregory $

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


            throw new NestableException( "Couldn't setCellStyleProperty.", e );
        }
    }

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


            throw new NestableException( "Couldn't setCellStyleProperty.", e );
        }
    }

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


            throw new NestableException( "Couldn't setCellStyleProperty.", e );
        }
    }

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            writer.flush();
        }
        catch (Exception e)
        {
            e.printStackTrace();
            testResult.addError(this, new NestableException("Unable to build workin file for skin test.", e));
        }
        finally
        {
            try
            {

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            writer.flush();
        }
        catch (Exception e)
        {
            e.printStackTrace();
            testResult.addError(this, new NestableException("Unable to build workin file for skin test.", e));
        }
        finally
        {
            try
            {

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        {
            // If we don't get a properly formed resourceName
            // then there's not much we can do. So
            // we'll forget about trying to search
            // any more paths for the template.
            throw new NestableException(
                "Need to specify a file name or file path!");
        }


        try 
        {
            File file = new File(resourceName);   
        
            if (file.canRead())
            {
                return new BufferedInputStream(
                    new FileInputStream(file.getAbsolutePath()));
            }
            else
            {
                throw new NestableException(
                    "File resource " + resourceName + " is not readable!");
            }
        }
        catch( FileNotFoundException fnfe )
        {
            throw new NestableException(
                "File resource " + resourceName + " cannot be found!");
        }
    }

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                }
                poolCapacity = capacity;
            }
            catch (Exception x)
            {
                throw new NestableException(
                    "Failed to initialize TurbinePoolService",x);
            }
        }
    }

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                            ((Poolable) instance).recycle();
                        }
                    }
                    catch (Exception x)
                    {
                        throw new NestableException(
                            "Recycling failed for " + instance.getClass().getName(),x);
                    }
                }
            }
            return instance;

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                        classLoaders.add(
                            loadClass((String) loaders.get(i)).newInstance());
                    }
                    catch (Exception x)
                    {
                        throw new NestableException(
                            "No such class loader '" +
                                (String) loaders.get(i) +
                                    "' for TurbinbeFactoryService",x);
                    }
                }

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    public Object getInstance(String className)
        throws NestableException
    {
        if (className == null)
        {
            throw new NestableException(
                new NullPointerException("String className"));
        }


        Factory factory = getFactory(className);
        if (factory == null)
        {
            Class clazz;
            try
            {
                clazz = loadClass(className);
            }
            catch (ClassNotFoundException x)
            {
                throw new NestableException(
                    "Instantiation failed for class " + className,x);
            }
            return getInstance(clazz);
        }
        else

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