Question

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How can I write a Java application that can update itself at runtime?

Hello guys, I want to be able to run a live update on my application.. So when there is an update, it notifies the user and then when allowed it downloads the necessary files and not the whole application again. I just need a detailed breakdown on what I need to do to achieve this.

Answer 1

I would suggest that you have a look at JRebel. It can perform updates to classes during runtime. Here’s a list of features (from their home page):

• Changes to method bodies
• Adding/removing Methods
• Adding/removing constructors
• Adding/removing fields
• Adding/removing classes
• Adding/removing annotations
• Changing static field value
• Adding/removing enum values
• Changing interfaces
• Replacing superclass