JAVA - Throwable class

JAVA - Throwable class

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  NAME :ASIF PATEL SUBJECT: OOPJ Throwable Class
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  Content 1. What isThrowable class 2. Class Constructors 3. Class Methods 4. Use
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  What is Throwableclass ?  The 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.
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  • This diagram illustratesthe class hierarchy of the Throwable class and its most significant subclasses. • Most programs throw and catch objects that derive from the Exception class. Exceptions indicate that a problem occurred but that the problem is not a serious systemic problem
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  Class Constructors 1. Throwable():This constructs a new throwable with null as its detail message.  EX :  O/P :
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  2. Throwable(String message): This constructs a new throwable with the specified detail message.  Example :  O/P :
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  3. Throwable(String message,Throwable cause) : This constructs a new throwable with the specified detail message and cause.  Example :  O/P :
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  Class Methods 1. getMessage(): Returns the detail message string of this throwable (which may be null). 2. getCause() : Returns the cause of this throwable or null. 3. initCause(Throwable cause) : Initializes the cause of this throwable to the specified value.  EX :
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  4. getLocalizedMessage() :Creates a localized description of this throwable. Subclasses may override this method in order to produce a locale- specific message.  EX :  O/P :
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  Use  EX : O/P :
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  Thank You