全角半角转换

public class Convert {
	public static void main(String[] args) throws Exception {
		String banjiao = "abcdefg,!@$%^&*( )";
		String quanjiao = ToQJ(banjiao);
		System.out.println(quanjiao);
		System.out.println(ToBJ(quanjiao));
	}

	// 半角转全角
	public static String ToQJ(String input) {
		char[] c = input.toCharArray();
		for (int i = 0; i < c.length; i++) {
			if (c[i] == 32) {
				c[i] = (char) 12288;
				continue;
			}
			if (c[i] < 127)
				c[i] = (char) (c[i] + 65248);
		}
		return new String(c);
	}

	// 全角转半角
	public static String ToBJ(String input) {
		char[] c = input.toCharArray();
		for (int i = 0; i < c.length; i++) {
			if (c[i] == 12288) {
				c[i] = (char) 32;
				continue;
			}
			if (c[i] > 65280 && c[i] < 65375)
				c[i] = (char) (c[i] - 65248);
		}
		return new String(c);
	}
}