Java經典例項：使用正規表示式：測試模式

FrankYou發表於2016-11-09
Java模式
import java.util.regex.Pattern;

/**
 * Created by Frank
 * 在Java中使用正規表示式：測試模式
 */
public class RESimple {
    public static void main(String[] args) {
        String pattern = "^Q[^u]\\d+\\.";
        String[] input = {"QA777. is the next flight. It is on time.", "Quack, Quack, Quack!"};
        Pattern p = Pattern.compile(pattern);
        for (String s : input) {
            /**
             * 在字串中匹配模式，從字串的首字母開始，或者之前已經成功呼叫該方法，則從未能符合前面匹配的第一個字元開始
             */
            boolean found = p.matcher(s).find();
            System.out.println("'" + pattern + "' " + (found ? " matches '" : "doesn't match '") + s + "'");
        }
    }
}

 輸出：

'^Q[^u]\d+\.'  matches 'QA777. is the next flight. It is on time.'
'^Q[^u]\d+\.' doesn't match 'Quack, Quack, Quack!'

 

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