Can somebody convert this to if-else statements instead of using case

public static int hexToBase10(String x) {

int finresult = 0;

for (int i = 0; i < x.length(); i++) {

//get a character at given index.

switch (x.charAt(i))

{

case '0':

break;

case '1':

finresult += (int)(Math.pow(16, x.length() - i - 1) + 0.5);

case '2':

finresult += 2 *(int)(Math.pow(16, x.length() - i - 1) + 0.5);

case '3':

finresult += 3 *(int)(Math.pow(16, x.length() - i - 1) + 0.5);