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import java.io.*;
import java.util.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class LeftSort {
 
  private List<Sortable> list;
 
  public <T extends Sortable> LeftSort(List<T> list) {
    this.list = list;
  }
 
  interface Sortable {}
 
  static class Foo implements Sortable {}
 
  public static void main(String[] args) throws java.lang.Exception {
    List<Foo> list = new ArrayList<Foo>();
    // Initialise... blah blah.
 
    LeftSort sorter = new LeftSort(list);
  }
}
 

Main.java:13: error: incompatible types: List<T> cannot be converted to List<Sortable>
        this.list = list;
                    ^
  where T is a type-variable:
    T extends Sortable declared in constructor <T>LeftSort(List<T>)
1 error

Standard output is empty