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();
}
package java.lang;
(>JDK1.0)public class
Throwable implements java.io.Serializable {
// Constructeurs publics
(>JDK1.0) public Throwable();
(>JDK1.0) public Throwable(String message);
// Méthodes d'instance publiques
(>JDK1.0) public native Throwable fillInStackTrace();
(>JDK1.1) public String getLocalizedMessage();
(>JDK1.0) public String getMessage();
(>JDK1.0) public void printStackTrace();
(>JDK1.0) public void printStackTrace(java.io.PrintStream s);
(>JDK1.1) public void printStackTrace(java.io.PrintWriter s);
(>JDK1.0) public String toString();
}
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| Christophe Merlet redfox@redfoxcenter.org | ©Tous droits réservés
11 septembre 1998 |