```
public class Solution {
public void moveZeroes(int[] nums) {
//Null Check
if(nums == null || nums.length == 0){
return;
}
int firstZeroIndex = -1;
//Find Index of First 0
for(int i=0;i<nums.length-1;i++){
if(nums[i] == 0)
{
firstZeroIndex = i;
break;
}
}
//If 0 is not found, return
if(firstZeroIndex <0)
return;
//swap the non zero number with the first zero, after swap update the firstzero index
for(int i= firstZeroIndex; i<= nums.length-1;i++){
if(nums[i] != 0){
nums[firstZeroIndex] = nums[i];
nums[i] = 0;
firstZeroIndex++;
}
}
}
```

}