import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.SystemFlavorMap;
import java.util.List;



public class SystemFlavorMapBugTest {
    class CustomTestClass {}
    public static void main(String[] args) throws Exception {
        SystemFlavorMap flavorMap = (SystemFlavorMap)SystemFlavorMap.getDefaultFlavorMap();
        
        String testNative = "CUSTOM_TEST_NATIVE";
        DataFlavor testFlavor = new DataFlavor(CustomTestClass.class, "custom test flavor");
        
        // Case 1: Setting one-way mapping directly
        System.out.println("Setting one-way mapping from native to flavor...");
        flavorMap.setFlavorsForNative(testNative, new DataFlavor[]{testFlavor});
        
        List<String> reverseMappings = flavorMap.getNativesForFlavor(testFlavor);
        System.out.println("Reverse mappings exist despite documentation saying they shouldn't:");
        System.out.println(reverseMappings);
        
        // Case 2: Attempting to create true one-way mapping by clearing first
        System.out.println("\nAttempting to create true one-way mapping...");
        String testNative2 = "ANOTHER_TEST_NATIVE";
        flavorMap.setNativesForFlavor(testFlavor, new String[0]);
        flavorMap.setFlavorsForNative(testNative2, new DataFlavor[]{testFlavor});
        
        reverseMappings = flavorMap.getNativesForFlavor(testFlavor);
        System.out.println("Reverse mappings after clearing and setting one-way mapping:");
        System.out.println(reverseMappings);
    }
}