Java中的2D数组，使用包含特殊字符作为索引的字符

Question

Is it possible to create a 2d array in java, such the column and row names are letter-characters and we can access like array[E][*] = ... ?

Here we can't use map because Map corresponds to 1-D array. So what will be the other alternatives ?

Answer 1

As you said in the comments that Map corresponds to 1D array, why not use Map of Maps.

Map<Character,Map<Character,Character>> outerMap = new HashMap<Character, Map<Character, Character>>();

and use a simple method to fetch your data:

public char getValue(char row ,char column, Map<Character,Map<Character,Character>> outerMap) {

return  outerMap.get(row).get(column);

}

Good Luck!