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import java.util.List;
 
class Product {
 
}
 
interface Dao {
    public <T> List<T> getList(List<String> idList);
    public <T> List<T> getAll();
}
 
class Impl implements Dao {
    @Override
    public  List<Product> getList(List<String> idList) {
        return null;
    }
 
    @Override
    public List<Product> getAll() {
        return null;
 
    }
 
}
 
public class MainJ {
 
    public static void main(String[] args) {
        System.out.println("Done");
    }
}
 

Main.java:26: error: class MainJ is public, should be declared in a file named MainJ.java
public class MainJ {
       ^
Main.java:12: error: Impl is not abstract and does not override abstract method <T>getList(List<String>) in Dao
class Impl implements Dao {
^
  where T is a type-variable:
    T extends Object declared in method <T>getList(List<String>)
Main.java:14: error: name clash: getList(List<String>) in Impl and <T>getList(List<String>) in Dao have the same erasure, yet neither overrides the other
    public  List<Product> getList(List<String> idList) {
                          ^
  where T is a type-variable:
    T extends Object declared in method <T>getList(List<String>)
Main.java:13: error: method does not override or implement a method from a supertype
    @Override
    ^
Note: Main.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
4 errors

Standard output is empty