public?class?DecimalToBinary{
	
	public?
	
	String?DtoB（?int?de?）
	{
	????//?binary?number
		String?bin?=?““;
		
		//?decimal?number
		int?mydata?=?de;

		//??binary
????????int?systemvalue?=?2;

		while?（mydata?!=?0）
		{
			//?the?last?bit?number?
			int?output?=?mydata?%?systemvalue;
			String?thisStr?=?Integer.toString（output）;?
			bin?=??thisStr?+?bin;
					
			mydata?=?mydata?-?output;
			mydata?=?mydata/systemvalue;

		}
		return?bin;
	}
	
	public?static?void?main（String[]?args）{
		DecimalToBinary?DTB?=?new?DecimalToBinary（）;
		int?ori?=?16000;
		String?myBinStr?=?DTB.DtoB（?ori?）;
		String?sysBinStr?=?Integer.toBinaryString（ori）;
		System.out.println（“Using?my?own?method?convert?decimal?16000?to?binary:?“?+?myBinStr）;
		System.out.println（“Using?system?method?convert?decimal?16000?to?binary:?“?+?sysBinStr）;
		
		System.out.println（“table?for?binary?numbers?from?1?to?128?decimal“）;
		for?（int?i?=?1;?i?<=?128;?i++）
		{
			System.out.println（Integer.toString（i）?+?“???“?+?DTB.DtoB（?i?））;
			
		}
	
	}
}

?屬性????????????大小?????日期????時間???名稱
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?????文件???????1066??2010-11-08?00:09??src\DecimalToBinary.java

?????文件???????1879??2010-11-08?00:12??src\output.txt

?????目錄??????????0??2010-11-08?00:12??src

-----------?---------??----------?-----??----

?????????????????2945????????????????????3