Table

Table.java

package com.naosim.table;

import java.util.HashMap;
import java.util.Map;

public class Table<ROW, CLM, CELL> {
    private final Map<CLM, Integer> columnIndex;
    private final Map<ROW, CELL[]> rows;

    public Table(CLM ...columns) {
        this.rows = new HashMap<>();
        this.columnIndex = new HashMap<>();
        for(int i = 0; i < columns.length; i++) {
            columnIndex.put(columns[i], i);
        }
    }

    public Table put(ROW row, CELL ...cells) {
        rows.put(row, cells);
        return this;
    }

    public CELL get(ROW row, CLM column) {
        return rows.get(row)[columnIndex.get(column)];
    }
}