Which method is used to search for a match in a string?exec()test()compile()split()PreviousSave & Next

Which method is used to compile a regular expression?exec()test()compile()split()PreviousSave & Next

Which method is used to replace a pattern in a string?search()replace()match()split()PreviousSave & Next

Which of these method of class String is used to check whether a given object starts with a particular string literal?

Predict the output of the below code :import java.util.regex.*;  public class TestRegEx{        public static void main(String args[])  {               Pattern p = Pattern.compile(".ech");             Matcher m = p.matcher("tech");               boolean b = m.matches();               System.out.println(b);      }}Select one:a.compile time errorb.falsec.Runtime Errord.trueClear my choice

Which method is used to find a substring within a string in C++?find()substr()search()locate()