All Packages Class Hierarchy This Package Previous Next Index
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(); }
Throwable
with no detail message. Throwable
with the specified detail message. Throwable
. Throwable
and its backtrace to the standard error stream. Throwable
and its backtrace to the specified print stream. Throwable
and its backtrace to the specified print writer. 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. 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. 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 native Throwable fillInStackTrace()
try { a = b / c; } catch(ArithmeticThrowable e) { a = Number.MAX_VALUE; throw e.fillInStackTrace(); }
Throwable
object. All Packages Class Hierarchy This Package Previous Next Index