public class IntegerDemo{
	public static void printInt(String s ,int a){
		System.out.println(s + "\t十進制:" + a + "\t 十六進制:" 
			+ Integer.toHexString(a) + "\t 二進制:" 
			+ Integer.toBinaryString(a));
	}

	public static void main(String arg[]){
		int a= 020;	//八進制
		int b = 20;		//十進制
		int c = 0x20;	//十六進制

		printInt("a =\t",a);
		printInt("b =\t",b);
		printInt("c =\t",c);
	}
}