Java [unchecked] unchecked case warning

Well, I've been looking around and doing a lot of Google searches, but I still can't find a way to avoid this warning

Integer result = chooser.showOpenDialog(null);
if (result.equals(0))
{
    String tempHolder = chooser.getSelectedFile().getPath();
    filenameLoad = new File(tempHolder);
    filenameSave = filenameLoad;
    FileInputStream fis = null;
    ObjectInputStream in = null;
    try
    {
        fis = new FileInputStream(filenameLoad);
        in = new ObjectInputStream(fis);;
    }
    catch(IOException ex)
    {
        ex.printStackTrace();
    }

    try
    {
        loadFile = (ArrayList<Dot>)in.readObject();
    }
    catch(IOException ex)
    {
        System.out.println("Cast fail");
    }
    catch(ClassNotFoundException ex)
    {
        System.out.println("Cast fail");
    }
    catch (ClassCastException ex)
    {
        System.out.println("Cast fail");
    }

    try
    {
        in.close();
    }
    catch(Exception ex)
    {
        System.out.println("Failed to close in");
    }
    save.setEnabled(true);
      gpanel.setDotList(loadFile);
  }

It is in line LoadFile = (ArrayList) in Warning is given in readobject(); I've added the catch, so I'm not sure why it still says it's not captured Does it help? thank you?

Solution

It is not "not captured", but "unchecked" The JVM cannot tell at runtime whether the ArrayList really contains a dot element when the conversion is completed

This warning occurs when converting from a primitive type to a generic type If you are sure that the cast is OK, you can use comments to suppress warnings

@SuppressWarnings("unchecked")

For this purpose, it is best to package the casting in a small and separate method