Allows you to easily try out regular expressions
// : c12:TestRegularExpression.java
// Allows you to easly try out regular expressions.
// {Args: abcabcabcdefabc "abc+" "(abc)+" "(abc){2,}" }
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class TestRegularExpression {
public static void main(String[] args) {
if (args.length < 2) {
System.out.println("Usage:\n" + "java TestRegularExpression "
+ "characterSequence regularExpression+");
System.exit(0);
}
System.out.println("Input: \"" + args[0] + "\"");
for (int i = 1; i < args.length; i++) {
System.out.println("Regular expression: \"" + args[i] + "\"");
Pattern p = Pattern.compile(args[i]);
Matcher m = p.matcher(args[0]);
while (m.find()) {
System.out.println("Match \"" + m.group() + "\" at positions "
+ m.start() + "-" + (m.end() - 1));
}
}
}
} ///:~
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