This is the error:
Note: Library.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
This is my code:
import java.util.HashMap;
public class Library
{
public Library()
{
}
public void getFinishedBooks(HashMap<String, Boolean> library)
{
if(library.size() < 1)
{
System.out.println("Error! Hashmap is empty");
}
else
{
for(String book : library.keySet())
{
if(library.containsKey(true))
{
System.out.println("This book has been completed" + book);
}
}
}
}
public static void main(String[] args)
{
HashMap myBooks = new HashMap();
myBooks.put("Road Down the Funneel", true);
myBooks.put("Rat, A Biology", false);
myBooks.put("Timeln", true);
myBooks.put("3D Food Printing", false);
Library myLibrary = new Library();
myLibrary.getFinishedBooks(myBooks);
}
}