public boolean checkTwoPair(){
if(hand.size()<4)
return false;
if(this.checkFullHouse()||this.checkFlush()||this.checkThreeOfKind())
return false;
if(!this.checkPair())
return false;
if(checkPair()){
Card[] sortedArray = hand.toArray(new Card[0]);
Arrays.sort(sortedArray);
int count=0;
for(int i =0;i<hand.size()-1;i++){
if(sortedArray[i]==sortedArray[i+1])
count++;

}
if(count==2)
return true;
}
return false;
}