針對上篇文章c++的寫法，改寫成java的寫法，測試發現有下面兩種，但是現在我還不能完全理解，暫時記錄，後面理解後再詳細註解。

public class BaseTest {
	public static void main(String[] args) {
		char[] rst = ConvertTo2String(107);
		System.out.println(rst);
		char[] rst2 = ConvertTo2String2(107);
		System.out.println(rst2);
		// 100101110 == 302
		// 01101011 == 107
	}

	public static char[] ConvertTo2String(long number) {
		char[] output = new char[33];

		int i = 0;
		for (; i < 32; i++) {
			output[i] = (char) (number & (1 << 31 - i));
			output[i] = (char) (output[i] >> 31 - i);
			output[i] = (output[i] == 0) ? '0' : '1';
		}
		output[i] = '\0';
		return output;
	}

	public static char[] ConvertTo2String2(long number) {
		char[] output = new char[33];
		long tmp = 0L;
		int i = 0;
		for (; i < 32; i++) {
			tmp = number & (1 << 31 - i);
			System.out.print((1 << 31 - i) + "~");
			System.out.println(tmp);
			output[i] = (tmp == 0) ? '0' : '1';
		}
		output[i] = '\0';
		return output;
	}
}