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Java Platform 1.2 Beta 4 |
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SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.lang.Throwable
Throwable
class is the superclass of all errors
and exceptions in the Java language. Only objects that are
instances of this class (or of one of its subclasses) are thrown
by the Java Virtual Machine or can be thrown by the Java
throw
statement. Similarly, only this class or one of
its subclasses can be the argument type in a catch
clause.
A Throwable
class contains a snapshot of the
execution stack of its thread at the time it was created. It can
also contain a message string that gives more information about
the error.
Here is one example of catching an exception:
try { int a[] = new int[2]; a[4]; } catch (ArrayIndexOutOfBoundsException e) { System.out.println("exception: " + e.getMessage()); e.printStackTrace(); }
Constructor Summary | |
Throwable()
Constructs a new Throwable with no detail message.
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Throwable(String message)
Constructs a new Throwable with the specified detail
message. |
Method Summary | |
Throwable | fillInStackTrace()
Fills in the execution stack trace. |
String | getLocalizedMessage()
Creates a localized description of this Throwable .
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String | getMessage()
Returns the detail message of this throwable object. |
void | printStackTrace()
Prints this Throwable and its backtrace to the
standard error stream. |
void | printStackTrace(PrintStream s)
Prints this Throwable and its backtrace to the
specified print stream. |
void | printStackTrace(PrintWriter s)
Prints this Throwable and its backtrace to the specified
print writer. |
String | toString()
Returns a short description of this throwable object. |
Methods inherited from class java.lang.Object | |
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait |
Constructor Detail |
public Throwable()
Throwable
with no detail message.
The stack trace is automatically filled in.public Throwable(String message)
Throwable
with the specified detail
message. The stack trace is automatically filled in.
message
- the detail message.Method Detail |
public String getMessage()
Throwable
,
or null
if this Throwable
does not
have a detail message.public String getLocalizedMessage()
Throwable
.
Subclasses may override this method in order to produce a
locale-specific message. For subclasses that do not override this
method, the default implementation returns the same result as
getMessage()
.public String toString()
Throwable
.public void printStackTrace()
Throwable
and its backtrace to the
standard error stream.System.err
public void printStackTrace(PrintStream s)
Throwable
and its backtrace to the
specified print stream.public void printStackTrace(PrintWriter s)
Throwable
and its backtrace to the specified
print writer.public Throwable fillInStackTrace()
try { a = b / c; } catch(ArithmeticThrowable e) { a = Number.MAX_VALUE; throw e.fillInStackTrace(); }
Throwable
object.printStackTrace()
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Java Platform 1.2 Beta 4 |
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