public static void main(String[] args) {

int val = 7320300;

var str = String.valueOf(val);

var val2 = str.chars().mapToObj(i -> (char) i).collect(StringBuilder::new,

(b, c) -> b.insert(0, (char) c), (b1, b2) -> b1.insert(0, b2));

// removing possible leading zeros

int i = 0;

while (val2.charAt(i) == '0') {

// does not work with deleteCharAt

// val2.deleteCharAt(0);

i++;

}

if (i > 0) {

val2.delete(0, i);

}

System.out.println(val2.toString());

}