multex.demo
Class AwtFile

java.lang.Object
  |
  +--multex.demo.AwtFile

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener

public class AwtFile

extends java.lang.Object

implements java.awt.event.ActionListener

Copies or moves a file, see methods File.copy(String,String) and File.move(String,String). Serves as a demonstration for reporting an exception which comes from a lower tier in the AWT user interface. Look as first example the command line file handling File. Each exception occurring in an ActionListener of the user interface is reported by calling

    multex.Awt.report(ownerFrame, exception);

into a pop up window including its causing exception The message window contains a button "Show Stack Trace", which will on activation report the call stack traceback, which is essential for searching errors in the program. After pressing this button the message window will contain e.g. the following output:

File input could not be copied to output
CAUSE: java.io.FileNotFoundException: input (Das System kann die angegebene Datei nicht finden)

----------Stack Trace follows:----------
java.io.FileNotFoundException: input (Das System kann die angegebene Datei nicht finden)
   at java.io.FileInputStream.open(Native Method)
   at java.io.FileInputStream.(Unknown Source)
   at File.File(File.java:94)
WAS CAUSING:
File$FileFailure: File {0} could not be copied to {1}
{0}=input  {1}=output
   at File.File(File.java:108)
   at AwtFile$1.actionPerformed(AwtFile.java:71)
   at java.awt.Button.processActionEvent(Unknown Source)
   at java.awt.Button.processEvent(Unknown Source)
   at java.awt.Component.dispatchEventImpl(Unknown Source)
   at java.awt.Component.dispatchEvent(Unknown Source)
   at java.awt.EventQueue.dispatchEvent(Unknown Source)
   at java.awt.EventDispatchThread.pumpOneEvent(Unknown Source)
   at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   at java.awt.EventDispatchThread.run(Unknown Source)

Method Summary

void	actionPerformed(java.awt.event.ActionEvent i_event)
static void	main(java.lang.String[] i_args) Effect: Creates an AWT user interface for file operations copy,move

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

main

public static void main(java.lang.String[] i_args)

Effect: Creates an AWT user interface for file operations copy,move

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent i_event)

Specified by:

actionPerformed in interface java.awt.event.ActionListener