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Convert an integer into binary, hexadecimal, and octal

class StringConversions {   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));   } }