【菜鸟请教】//[如下代码中，为何‘石’、‘剪’可以，而‘石头’、‘剪刀’不可以？？，菜鸟，所以解释的的越简单越好]

public class Test02{
public static void main(String args []){
char play1 = '石';
char play2 = '剪';
if(play1 == '石' && play2 == '石'){
System.out.println("平");
}
else if(play1 == '石' && play2 == '剪'){
System.out.println("玩家一赢");
}
else if(play1 == '石' && play2 == '布'){
System.out.println("玩家二赢");
}
else if(play1 == '剪' && play2 == '石'){
System.out.println("玩家二赢");
}
else if(play1 == '剪' && play2 == '剪'){
System.out.println("平");
}
else if(play1 == '剪' && play2 == '布'){
System.out.println("玩家一赢");
}
else if(play1 == '布' && play2 == '石'){
System.out.println("玩家一赢");
}
else if(play1 == '布' && play2 == '剪'){
System.out.println("玩家二赢");
}
else if(play1 == '布' && play2 == '布'){
System.out.println("平");
}
}
}