package com;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexTestHarnessV5 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.print("Enter your regex: ");
Pattern pattern = Pattern.compile(scanner.nextLine());
System.out.print("Enter input string to search: ");
Matcher matcher = pattern.matcher(scanner.nextLine());
boolean found = false;
while (matcher.find()) {
System.out.println(
"Found \""+matcher.group()+
"\" starting index "+matcher.start()+
" ending index "+ matcher.end());
found = true;
}
if (!found) {
System.out.println("No match found.%n");
}
}
}
}
结果：
Enter your regex: jian
Enter input string to search: j 12445jlafjlja
No match found.%n
Enter your regex: jian
Enter input string to search: jljjianjljlk
Found "jian" starting index 3 ending index 7
Enter your regex:
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