Question

Can I please have Java code that uses standard J2SE packages to format and parse strings and streams.

Can the answer be typewritten please.

Answer 1

Java has a rich set of API's for parsing the strings and streams. Parsing a string means that converting a string into other class types. Example: String to date, string to long,etc.

package stringparse;

import java.text.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.regex.Pattern;
import java.util.*;

public class StringParse{

public static void main(String[] args) throws ParseException {
//Parsing Strings
System.out.println("Parsing and formating String");
System.out.println("----------------------------");
String parseString = "12/04/2012";
System.out.println("Input String: " + parseString);
//string formated into dd/MM/yy
SimpleDateFormat oldDateFormat = new SimpleDateFormat("dd/MM/yy");
SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MMM-yyyy");
Date d = oldDateFormat.parse(parseString);
String output = dateFormat.format(d);
System.out.println("Parsed and formated string: " + output);
//converting string into a stream
Pattern pattern = Pattern.compile("-");
// split date by '/' by converting into stream
System.out.println("Parsing and formating Stream");
System.out.println("----------------------------");
Stream<String> dateStream = pattern.splitAsStream(output);
dateStream.forEach(System.out::println);
}
}