Can't start applications in eclipse in debug mode on newly installed mac

I have reinstalled snow leopard (10.6.4) and it's fully updated. Running java -version gives me:

Java version "1.6.0_20"

Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-10M3065)

Java HotSpot(TM) Client VM (build 16.3-b01-279, mixed mode)

I have installed a fresh version of eclipse (helios, 3.6, build: 20100617-1415).

I create a new java project, add a simple test case:

public class TestMyEclipse {  
      @Test  
      public void testIt() {  
       assertTrue(true);  
      }  
}

When I run this in normal mode in eclipse it works as expec开发者_如何转开发ted. But when I run it in debug mode I get the following error:

Invalid memory access of location 0x14 rip=0x1007f9d22

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The problem is that your localhost has been removed from your hosts entry. I've posted a blog entry detailing how I fixed it. http://yadg.blogspot.com/2011_01_01_archive.html

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I found another blog which describes the problem and the solution in greater detail. Here is the link if it helps:

http://apachefelix.blogspot.com/2012/05/offtopic-mac-cant-resolve-localhost-and.html

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Type /private/etc in the finder.

Look for the hosts file. Edit it and paste:

127.0.0.1 localhost

I used sublime and it'll ask sudo credentials before saving the modified file.