package guitests.guihandles;

public class GuiHandleSetting {
    static final int COMMAND_RUN_TIME = 80;
    static final int SLEEP_LENGTH = 50;
    static final int LONG_SLEEP_LENGTH = 600;
}

package guitests.guihandles;

public class GuiHandleSetting {
    public static final int COMMAND_RUN_TIME = 80;
    public static final int SLEEP_LENGTH = 50;
    public static final int LONG_SLEEP_LENGTH = 600;
}

Change access specifiers for sleep times