class Card {
private int suit;

private int card;

public Card( int suit, int card ) {
super( );
this.suit = suit;
this.card = card;
}

public int getCard( ) {
return card;
}

public void setCard( int card ) {
this.card = card;
}

@Override
public String toString( ) {

StringBuilder result = new StringBuilder( );
switch ( card ) {
case 11 :
result.append( "Jack" );
break;
case 12 :
result.append( "Queen" );
break;
case 13 :
result.append( "King" );
break;
case 14 :
result.append( "Ace" );
break;
default :
result.append( card );
}
result.append( " of " );
switch ( suit ) {
case 0 :
result.append( "hearts" );
break;
case 1 :
result.append( "diamonds" );
break;
case 2 :
result.append( "clubs" );
break;
case 3 :
result.append( "spades" );
break;
}
return result.toString( );

}

}

import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;

public class War {

public static void main( String[] args ) {

List<Card> deck = new ArrayList<Card>( );

for ( int i = 0; i < 4; i++ ) {
for ( int j = 2; j < 15; j++ ) {
deck.add( new Card( i, j ) );
}
}

Collections.shuffle( deck, new Random( System.nanoTime( ) ) );

LinkedList<Card> player1Cards = new LinkedList<Card>( );
player1Cards.addAll( deck.subList( 0, 25 ) );

LinkedList<Card> player2Cards = new LinkedList<Card>( );
player2Cards.addAll( deck.subList( 26, deck.size( ) ) );

while ( true ) {

Card player1Card = player1Cards.pop( );
Card player2Card = player2Cards.pop( );

System.out.println( "Player 1: " + player1Card.toString( ) );
System.out.println( "Player 2: " + player2Card.toString( ) );

if ( player1Card.getCard( ) > player2Card.getCard( ) ) {
player1Cards.addLast( player2Card );
player1Cards.addLast( player1Card );
} else if ( player1Card.getCard( ) < player2Card.getCard( ) ) {
player2Cards.addLast( player2Card );
player2Cards.addLast( player1Card );
} else {
System.out.println( "War" );
List<Card> warCards1 = new ArrayList<Card>( );
List<Card> warCards2 = new ArrayList<Card>( );
for ( int i = 0; i < 3; i++ ) {
if(player1Cards.size( )==0 || player2Cards.size( )==0){
break;
}
warCards1.add( player1Cards.pop( ) );
warCards2.add( player2Cards.pop( ) );
}
System.out.println("Player 1 war: " + warCards1.get( 0 ).toString( ) );
System.out.println("Player 2 war: " + warCards2.get( 0 ).toString( ) );
if ( warCards1.get( 0 ).getCard( ) > warCards2.get( 0 ).getCard( ) ) {
player1Cards.addAll( warCards2 );
player1Cards.addAll( warCards1 );
System.out.println( "Player 1 wins war!" );
} else {
player2Cards.addAll( warCards2 );
player2Cards.addAll( warCards1 );
System.out.println( "Player 2 wins war!" );
}
}

if ( player1Cards.size( ) == 0 ) {
System.out.println( "Player 1 wins!" );
break;
} else if ( player2Cards.size( ) == 0 ) {
System.out.println( "Player 2 wins!" );
break;
}
}
}
}