static final修饰不明白
声明的变量

public final static int[][] highscores = new int[3][5];
public final static String[][] players = new String[][]{
{"player", "player", "player", "player", "player"},
{"player", "player", "player", "player", "player"},
{"player", "player", "player", "player", "player"},
};

对其进行如下操作

public static void addScore(int diff, String player, int score){
for(int i = 0; i < 5; i++){
if(score > highscores[diff - 3][i]){
for(int j = 4; j > i; j--){
highscores[diff - 3][j] = highscores[diff - 3][j - 1];
players[diff - 3][j] = players[diff - 3][j - 1];
}
highscores[diff - 3][i] = score;
players[diff - 3][i] = player;
break;
}
}
}

为什么没报错，按理说final修饰后应该不能修改
[解决办法]
final 修饰一个引用类型，指的是不能对变量重新赋值，但变量本身可以变化。
[解决办法]

public final static int[][] highscores = new int[3][5]; 
    public final static String[][] players = new String[][]{ 
        {"player", "player", "player", "player", "player"}, 
        {"player", "player", "player", "player", "player"}, 
        {"player", "player", "player", "player", "player"}, 
    };

这的final修饰的是 highscores这个变量 ，它指向的内存地址不能变，但是他内存地址存放的值是可以改变的
[解决办法]
比如

public final static int[][] highscores = new int[3][5];  

public void xXXX(){
  int [][] A = new int[3][5] ;
  ...
  highscores = A ; //这样子是错误的，highscores 指向的对象在内存中的地址不能改变 
  highscores[0][0] = 1 ;//合法 ，赋值
}