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//ʹÓÃabstractÄ¿µÄÊÇΪÁËÈÃʹÓÃÕßÖ»Äܵ÷ÓÃgetInstance»ñȡʵÀý
public abstract class RegexUtil {
public static void main(String[] args) {
RegexUtil ru = RegexUtil.getInstance();
String regexp = "(\\d+.\\d+.\\d+.\\d+):(\\d+)";
String data = "ldap://192.168.16.152:389/";
System.out.println(">>>" + ru.matchGroup(regexp, data).size());
}
public List<String> matchGroup(String regexp, String data) {
Pattern p = Pattern.compile(regexp);
Matcher matcher = p.matcher(data);
List<String> list = null;
while (matcher.find()) {
int length = matcher.groupCount();
list = new java.util.ArrayList<String>(length);
for (int i = 1; i < length + 1; i++) {
list.add(matcher.group(i));
}
}
return list;
}
private static RegexUtil ru = null;
//µ¥Ì«Ä£Ê½
public static RegexUtil getInstance() {
if (ru == null) {
ru = new RegexUtil() {
};
}
return ru;
}
}


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public class Count {
public static void main(String[] args) {
final int START = 2000000000;
int count = 0;
for (float f = START; f < S ......

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static void copy(String src, String dest) throws IOException {
InputStream in = null;
OutputStream out = n ......

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