can't convert string to date in java code example

Example 1: string to date conversion java

import java.text.SimpleDateFormat;  
import java.util.Date;  
public class StringToDateExample1 {  
public static void main(String[] args)throws Exception {  
    String sDate1="31/12/1998";  
    Date date1=new SimpleDateFormat("dd/MM/yyyy").parse(sDate1);  
    System.out.println(sDate1+"\t"+date1);  
}  
}

Example 2: How to convert string to date in Java 8

// How to convert string to date in Java 8
import java.time.LocalDate;
import java.time.LocalDateTime;
public class Java8StringToDate
{
   public static void main(String[] args)
   {
      DateTimeFormatter dtf1 = DateTimeFormatter.ofPattern("d/MM/yyyy");
      String strDate1 = "14/05/2005";
      LocalDate ld1 = LocalDate.parse(strDate1, dtf1); 
      System.out.println(ld1);
      DateTimeFormatter dtf2 = DateTimeFormatter.ofPattern("MMM d yyyy");
      String strDate2 = "May 14 2005";
      LocalDate ld2 = LocalDate.parse(strDate2, dtf2); 
      System.out.println(ld2);
   }
}