正則表達式

public final class Matcher implements MatchResult

public final class Pattern implements java.io.Serializable

代碼：

package yuki.regular;import java.util.regex.Matcher;import java.util.regex.Pattern;public class FirstTest {    public static void main(String[] args) {                /**         * Pattern，正則表達式的編譯表示形式         * public final class Pattern implements java.io.Serializable         */        String str = "hi! i am a tony; glad to see you!";                String regex = "http://p{Punct}";        Pattern pattern = Pattern.compile(regex);        String[] strArr =  pattern.split(str);                for(int i = 0; i < strArr.length; ++i)            System.out.Gmail.com";        Pattern p2 = Pattern.compile("http://w+@//w+.[a-zA-Z]+");        Matcher m2 = p2.matcher(s2);        System.out.println("m2.matches() = " + m2.matches());    }}

運行結(jié)果：

strArr[0] = histrArr[1] =  i am a tonystrArr[2] =  glad to see you不匹配匹配m2.matches() = true

代碼：

package yuki.regular;import java.util.regex.Matcher;import java.util.regex.Pattern;public class SecondTest {    public static void main(String[] args) {                /**         * 匹配替換         */        String date = "2015/2/27";        Pattern p = Pattern.compile("/");        Matcher m = p.matcher(date);        String s = m.replaceAll("-");        System.out.println("m.matches() = " + m.matches());        System.out.println("s = " + s);         System.out.println("m.replaceFirst(/"-/") = " + m.replaceFirst("-"));                        //匹配電話號碼        String phone = "0755-28792686";        String regex = "http://d{3,4}-//d{7,8}";        boolean isPhone = phone.matches(regex);        System.out.println("isPhone = " + isPhone);    }}

運行結(jié)果：

m.matches() = falses = 2015-2-27m.replaceFirst("-") = 2015-2/27isPhone = true

代碼：

package yuki.regular;public class ThirdTest {    public static void main(String[] args) {                /**         * 至少含有字符串?dāng)?shù)組中的一個         */        String s = "123,456,789,012,345";        String s2 = "123,456,789,013,345";        String regex = ".*(234|678|012).*";        boolean isMatch = s.matches(regex);        boolean isMatch2 = s2.matches(regex);        System.out.println("isMatch = " + isMatch);        System.out.println("isMatch2 = " + isMatch2);                        //匹配金額        String price = "499.00";        System.out.println("price.matches(/"http://d+.//d+/")" + price.matches("http://d+.//d+"));    }}

運行結(jié)果：

isMatch = trueisMatch2 = falseprice.matches("/d+./d+")true

更多參考： API：java.util.regex 馬劍威_JAVA基礎(chǔ)_正則表達式

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