Implicit super constructor Object is undefined for default constructor. Must define an explicit cons

Today while writing test class in eclipse i saw below error:

This was happening due to my JRE was not set. To find it right click project –> Properties –> Java Build Path –> Click Libraries tab as shown below:

To set JRE into build path click Add Library…

 

Select JRE System Library –> Click Next

Choose Workspace default JRE or Alternate installed JRE (If you want to install new JRE please use this link : Install new JRE eclipse ) . I choosen Workspace default JRE as below then click finish:

 

Now you will see on Libraries tab new JRE system Library is set and active

Click OK to finish it. This should resolve the issue.

Solution 2:

Sometime you will see JRE system libraries is already set but still it gives error. To resolve this Click project –> Properties –> Java Build Path –> Click Libraries tab –>Select existing JRE or installed new JRE as shown below and click OK to rebuild the project.

 

This should resolve the issue.