Java Data Type - 如何将整数转换为二进制，十六进制和八进制

public class Main {
  public static void main(String args[]) {
    int num = 19648;

    System.out.println(num + " in binary: " + Integer.toBinaryString(num));

    System.out.println(num + " in octal: " + Integer.toOctalString(num));

    System.out.println(num + " in hexadecimal: " + Integer.toHexString(num));
  }
}