Homework2

BossPlayer.java:
http://www2.hkedcity.net/citizen_files/aa/qd/ty12222/myresources/200710/448475/BossPlayer.java
FightersUniverse.java:
http://www2.hkedcity.net/citizen_files/aa/qd/ty12222/myresources/200710/448475/FightersUniverse.java
Player.java
http://www2.hkedcity.net/citizen_files/aa/qd/ty12222/myresources/200710/448475/Player.java
I use two arrays and shuffle to random which player attack.
A numbers array is{0.1,2,3}
A player array is {player1,player2,player3,player4}
0 is player1, 1 is player2, 2 is player3, 3 is player4