return long as string code example

Example 1: toString convert to long

long l = 369L;
String s = String.format("%d", l);

Example 2: toString convert to long

long number = 45;
System.out.println(Long.toBinaryString(number)); //101101
System.out.println(Long.toOctalString(number)); //55
System.out.println(Long.toHexString(number)); //2d
System.out.println(Long.toString(number, 5)); //140