long[][][][][] beans = new long[2][2][2][2][2];

for (int i = 0; i < beans.length; i++) {
    for (int j = 0; j < beans[i].length; j++) {
        for (int k = 0; k < beans[i][j].length; k++) {
            for (int l = 0; l < beans[i][j][k].length; l++) {
                beans[i][j][k][l] = new long[(int) (1.0 + 6.0 * Math.random())];
            }
        }
    }
}

Gson gson = new Gson();

System.out.println(gson.toJson(beans));