java - I am getting following warning in my netbeans project -

I am trying to make connections to mysql program. I'm getting this kind of warning

  Run: 16 March 2015 7:11:49 PM Read java.util.jar.Attributes WARNING: MANIFEST Duplicate name in: Class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. March 16, 2015 7:11:49 PM Read java.util.jar.Attributes. Warning: duplicate in duplication name: class-path. Make sure there are no duplicate entries in the manifest, and these blank lines separate different sections in both your manifest and meta-INF / MANIFEST.MF in the Jar file. Username exists, successfully developed (total time: 0 seconds)  

I have tried to convert mysqlconnector correctly too.

  manifest-version: 1.0  

is my manifest file.