How To Add Column To 2D Array

I need to add a column to my array and copy an old array and then fill the new array with another array..However, unfortunately it does not work. I found this code online..but it seems it does not work.

static float[][] temperatures = new float[5][6];
static float[] d=new float[5];
float[][] neww;
int am,am1,am2,am3,res1,res2;
public static void main(String[] args) {
float[][] neww= Arrays.copyOf(temperatures, temperatures.length+1);
neww[temperatures.length]= new float[temperatures.length];
for (int i = 0; i < temperatures.length; i++) {
neww[temperatures.length][i] = Float.valueOf(d[i]);
}