How to reload java class automatically in eclipse?

Question

I have a project in eclipse which contains both a jsp file and a java class. But when I make a change in my java class, eclipse does not understand the changes in the class until I close eclipse and open it again. It is very annoying that I have to close eclipse and open it after even just adding a print statement. How can I fix this?

example, lets say i have this method :

public String m1(){
     return "Johnny";
}

and this statement in jsp file:

<%= a.m1() &>

(I am passing jsp:useBean part of jsp our class name is a )

this prints "Johnny".Then i make change on method like this:

public String m1(){
  return "Liz";
}

after this, i build my project.But it still prints Johnny rather than Liz.When i close eclipse and reopen it this time it prints Liz.

Yeah I did this but even it builds there is no change until I close eclipse — user3783144
– user3783144, Commented Jul 24, 2014 at 8:51
You are invoking your web server incorrectly on your code. Add details on how you currently work. — Thorbjørn Ravn Andersen
– Thorbjørn Ravn Andersen, Commented Jul 24, 2014 at 9:01

Andrew Stubbs · Accepted Answer · 2014-07-24 08:51:25Z

2

To get eclipse to recompile your code:

Project -> Build All

or just hit Ctrl+B

To have that happen whenever you make a change (and save it):

Project -> Build Automatically

To have eclipse notice when you make a change to a file even from outside eclipse:

Window -> Preferences -> General -> Workspace -> Refresh using native hooks or polling

answered Jul 24, 2014 at 8:51

Andrew Stubbs

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Oliver · Accepted Answer · 2014-07-24 08:50:12Z

0

This seems to be an issue with Eclipse. Try downloading the latest Eclipse version. Before that try these things:

Clean Project
Delete meta data of workspace, create new work space and import project again.

answered Jul 24, 2014 at 8:50

Oliver

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