java正则获取字符前后数据

<pre name="code" class="java">public class RegTest {

	//字符串截取
	public static String regComp(String item) {
		String num = "";
		// 替换中文
		String reg = "[\\u4e00-\\u9fa5]+";
		//截取λ|入后面数字
		String comp1 = "[\\s\\S]*([λ|入]\\d*)[\\s\\S]*";
		//截取波|第前面数字
		String comp2 = "(\\d+[波|第])";
		if (item.matches(comp1)) {
			num = item.replaceFirst(comp1, "$1").replaceAll(reg, "").replace("λ", "");
		} else {
			Pattern p = Pattern.compile(comp2);
			Matcher m = p.matcher(item);
			if (m.find()) {
				num = m.group(1).replaceAll(reg, "");
			}
		}
		return num;
	}

	/**
	 * @Description: TODO(这里用一句话描述这个类的作用)
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		String str1 = "石家庄(至郑州)架1-2-23-OTU3S-1(OTU3S 1波).OCH)";
		String str3 = " 北京东四1-1-4D-OTU3S-1(OTU3S 100第三个).OCH";
		String str2 = " 北京东四1-1-4D-OTU3S-1(OTU3S 入12).OCH";
		String str4 = " 北京东四1-1-4D-OTU3S-1(OTU3S λ12334).OCH";
		String[] array = { str1, str2, str3,str4 };

		for (int i = 0; i < array.length; i++) {
			//测试
			String num = regComp(array[i]);
			System.out.println(num);
		}
	}
}

1
12
100
12334