In java I am trying to find the second smallest and second largest number in a 2d array.

int array[][] = {{1,2.3},{3,4,5,},{6,7,8}};

int n = array.length;

for (int i = 0; i < n; i++) {

for(int j = 0; j < n; j++) {

if(array[i] < [j]) }

int temp = array[i];

array[i] = array[j];

array[j] = temp;

}

}

}

System.out.print(array[1]);

system.out.print(array[n-2]);

However I get an error and I am not sure how to fix it.