title: Maven: missing net.sf.json-lib
body: <p>I found net.sf.json-lib <a href="http://mvnrepository.com/artifact/net.sf.json-lib/json-lib" rel="noreferrer">in the central repository</a>. Copy-pasted the dependency (with version 2.3), and then when I build I get this error:</p>
  
  <pre><code>[INFO] Unable to find resource 'net.sf.json-lib:json-lib:jar:2.2.3' in repository central (http://repo1.maven.org/maven2)
  
  [ERROR] BUILD ERROR
  [INFO] ---------------------------------------------------------
  [INFO] Failed to resolve artifact.
  
  Missing:
  ----------
  1) net.sf.json-lib:json-lib:jar:2.3
  
    Try downloading the file manually from the project website.
  </code></pre>
  
  <p>I tried using version 2.2.3, but I'm getting the same error. Why am I getting this error? I can override it by installing it locally, but I want to understand what the problem is.</p>
  
  <p><strong>Edit</strong> - I deleted the package from my local repository, and tried again, this time getting a checksum error. I guess I should file a bug report with json-lib.</p>
  
  <pre><code>[WARNING] *** CHECKSUM FAILED - Error retrieving checksum file for net/sf/json-lib/json-lib/2.3/json
  -lib-2.3.pom - IGNORING
  </code></pre>