Import XXX cannot be resolved for Java SE standard classes [duplicate]

Question

I use Eclipse and turns out I have a bunch of import * not resolved errors.

import java.sql.Date; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.sql.Timestamp; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; 

All of the above have the same error. I checked my java version it is 1.7.0 open jdk. I updated Java Home and the JRE library to use. Its still not working. Note: I imported the code repository from bibucket via the mercurial plugin itself.

Answer 1

Right click on project - >BuildPath - >Configure BuildPath - >Libraries tab - >

Double click on JRE SYSTEM LIBRARY - >Then select alternate JRE

Answer 2

If the project is Maven, you can try this way :

1. right click the "Maven Dependencies"-->"Build Path"-->"Remove from the build path";
2. right click the project ,navigate to "Maven"--->"Update project....";

Then the import issue should be solved .