Not build

[dakariakin]

Hello, on build engine i got this error:

javac -sourcepath src/ -d bin/ `find src/ -name '*.java' -regex '^[./A-Za-z0-9]*$'` -Xlint:unchecked

Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 
src/nl/starapple/poker/MatchPlayer.java:1225: warning: [unchecked] unchecked cast
            Vector<Card> tempTableCards = (Vector<Card>) tableCards.clone();
                                                                         ^
  required: Vector<Card>
  found:    Object
src/nl/starapple/poker/Deck.java:63: warning: [unchecked] unchecked cast
        cardOrderSavePoint = (ArrayList<Integer>) cardOrder.clone();
                                                                 ^
  required: ArrayList<Integer>
  found:    Object
src/nl/starapple/poker/Deck.java:72: warning: [unchecked] unchecked cast
        cardOrder = (ArrayList<Integer>) cardOrderSavePoint.clone();
                                                                 ^
  required: ArrayList<Integer>
  found:    Object
3 warnings

Got this error on java versions "1.7.0_76" and "1.8.0_40"