Solved

How to  UNDO  a function in java

Posted on 2003-11-14
5
245 Views
Last Modified: 2010-03-31
I need to have a UNDO function in java using the (CONTROL and Z )key pressed.
Please try to give the solution because it is quite so important to me.
0
Comment
Question by:ashok3sep
  • 2
5 Comments
 
LVL 35

Expert Comment

by:TimYates
ID: 9746640
0
 
LVL 5

Author Comment

by:ashok3sep
ID: 9746957
But i want to undo all the previous operation not text element but also if i make any changes in my diagram.
0
 
LVL 35

Accepted Solution

by:
TimYates earned 50 total points
ID: 9747015
http://www.javaworld.com/javaworld/jw-06-1998/jw-06-undoredo.html

Shows how to use the UndoManager with a list...  

Basically, each operation the user performs has to be a class that extends AbstractUndoableEdit.  It is up to you to provide the implementations that say whether an operation can be undone, what happens when it is undone, and how it can be redone...

The applet doesn't work on that page, but the code is valid :-)

Tim.
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Viewers will learn about basic arrays, how to declare them, and how to use them. Introduction and definition: Declare an array and cover the syntax of declaring them: Initialize every index in the created array: Example/Features of a basic arr…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question