If
we represent a group of string objects according to particular patter is called
“Regular Expression”. By using
Regular Expression we can develop validations and pattern matching etc. Here I
have given interview questions on regular expression with examples.
1) What is the Regular Expression?
If
we represent a group of string objects according to particular patter is called
“Regular Expression”.
import java.util.regex.*;
public class RegularExpres {
public static void main(String[] args) {
int count=0;
Pattern p=Pattern.compile("a");
Matcher m=p.matcher("abcdabc");
while(m.find()) {
count++;
System.out.println(m.start()+" "+m.end()+" "+m.group());
}
System.out.println("total : " +count);
}
}