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java.lang.Objectjava.lang.Throwable
java.lang.Exception
org.jfree.util.StackableException
public abstract class StackableException
A baseclass for exceptions, which could have parent exceptions. These parent exceptions are raised in a subclass and are now wrapped into a subclass of this Exception.
The parents are printed when this exception is printed. This class exists mainly for debugging reasons, as with them it is easier to detect the root cause of an error.
Constructor Summary | |
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StackableException()
Creates a StackableRuntimeException with no message and no parent. |
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StackableException(java.lang.String message)
Creates an exception. |
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StackableException(java.lang.String message,
java.lang.Exception ex)
Creates an exception. |
Method Summary | |
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java.lang.Exception |
getParent()
Returns the parent exception (possibly null). |
void |
printStackTrace()
Prints this Throwable and its backtrace to the
standard error stream. |
void |
printStackTrace(java.io.PrintStream stream)
Prints the stack trace to the specified stream. |
void |
printStackTrace(java.io.PrintWriter writer)
Prints the stack trace to the specified writer. |
Methods inherited from class java.lang.Throwable |
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fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, setStackTrace, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public StackableException()
public StackableException(java.lang.String message, java.lang.Exception ex)
message
- the exception message.ex
- the parent exception.public StackableException(java.lang.String message)
message
- the exception message.Method Detail |
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public java.lang.Exception getParent()
public void printStackTrace(java.io.PrintStream stream)
printStackTrace
in class java.lang.Throwable
stream
- the output stream.public void printStackTrace(java.io.PrintWriter writer)
printStackTrace
in class java.lang.Throwable
writer
- the writer.public void printStackTrace()
Throwable
and its backtrace to the
standard error stream. This method prints a stack trace for this
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[] argv) { crunch(null); } static void crunch(int[] a) { mash(a); } static void mash(int[] b) { System.out.println(b[0]); } }
printStackTrace
in class java.lang.Throwable
System.err
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