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uPortal 2.4.1 API Documentation |
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java.lang.Objectjava.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
org.jasig.portal.lang.ChainedRuntimeException
The ChainedRuntimeException
class has facilities for
exception chaining. Exceptions which extend this class inherit
these facilities by implementing appropriate constructors.
Constructor Summary | |
ChainedRuntimeException()
Constructs an exception with no message and no cause. |
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ChainedRuntimeException(java.lang.String message)
Constructs an exception with a message but no cause. |
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ChainedRuntimeException(java.lang.String message,
java.lang.Throwable cause)
Constructs a new exception instance with a message and a cause. |
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ChainedRuntimeException(java.lang.Throwable cause)
Constructs a new exception instance with no message but a cause. |
Method Summary | |
java.lang.Throwable |
getCause()
Returns the cause for this Throwable or
null . |
java.lang.String |
getLocalizedMessage()
Translate the error message to a locale specific error message. |
void |
printStackTrace()
Prints this throwable and its backtrace to the standard error stream. |
void |
printStackTrace(java.io.PrintStream stream)
Prints this throwable and its backtrace to the specified print stream. |
void |
printStackTrace(java.io.PrintWriter stream)
Prints this throwable and its backtrace to the specified print writer. |
Methods inherited from class java.lang.Throwable |
fillInStackTrace, getMessage, getStackTrace, initCause, setStackTrace, toString |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public ChainedRuntimeException()
public ChainedRuntimeException(java.lang.String message)
message
- exception messagepublic ChainedRuntimeException(java.lang.Throwable cause)
cause
- underlying cause of the exceptionpublic ChainedRuntimeException(java.lang.String message, java.lang.Throwable cause)
message
- exception messagecause
- underlying cause of the exceptionMethod Detail |
public java.lang.Throwable getCause()
Throwable
or
null
. The cause is mean for diagnostic purposes
only; Clients should not try to use the cause for additional
error handling since that would build an inappropriate
subsystem dependency.
null
if not setpublic java.lang.String getLocalizedMessage()
public void printStackTrace()
Throwable
object on the error output stream that
is the value of the field System.err
. The first
line of output contains the result of the Throwable.toString()
method for this object. Remaining lines represent data
previously recorded by the method Throwable.fillInStackTrace()
. The format of this information depends on
the implementation, but the following example may be regarded
as typical:
This example was produced by running the program:java.lang.NullPointerException at MyClass.mash(MyClass.java:9) at MyClass.crunch(MyClass.java:6) at MyClass.main(MyClass.java:3)
class MyClass { public static void main(String[] args) { crunch(null); } static void crunch(int[] a) { mash(a); } static void mash(int[] b) { System.out.println(b[0]); } }The backtrace for a throwable with an initialized, non-null cause should generally include the backtrace for the cause. The format of this information depends on the implementation, but the following example may be regarded as typical:
HighLevelException: MidLevelException: LowLevelException at Junk.a(Junk.java:13) at Junk.main(Junk.java:4) Caused by: MidLevelException: LowLevelException at Junk.c(Junk.java:23) at Junk.b(Junk.java:17) at Junk.a(Junk.java:11) ... 1 more Caused by: LowLevelException at Junk.e(Junk.java:30) at Junk.d(Junk.java:27) at Junk.c(Junk.java:21) ... 3 moreNote the presence of lines containing the characters "...". These lines indicate that the remainder of the stack trace for this exception matches the indicated number of frames from the bottom of the stack trace of the exception that was caused by this exception (the "enclosing" exception). This shorthand can greatly reduce the length of the output in the common case where a wrapped exception is thrown from same method as the "causative exception" is caught. The above example was produced by running the program:
public class Junk { public static void main(String args[]) { try { a(); } catch(HighLevelException e) { e.printStackTrace(); } } static void a() throws HighLevelException { try { b(); } catch(MidLevelException e) { throw new HighLevelException(e); } } static void b() throws MidLevelException { c(); } static void c() throws MidLevelException { try { d(); } catch(LowLevelException e) { throw new MidLevelException(e); } } static void d() throws LowLevelException { e(); } static void e() throws LowLevelException { throw new LowLevelException(); } } class HighLevelException extends Exception { HighLevelException(Throwable cause) { super(cause); } } class MidLevelException extends Exception { MidLevelException(Throwable cause) { super(cause); } } class LowLevelException extends Exception { }
public void printStackTrace(java.io.PrintStream stream)
stream
- PrintStream
to use for output
java.lang.NullPointerException
- if stream is null
public void printStackTrace(java.io.PrintWriter stream)
stream
- PrintWriter
to use for output
java.lang.NullPointerException
- if stream is null
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uPortal 2.4.1 API Documentation |
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