Thursday, July 16, 2015

Java program to validate the PAN card Number : Regular expression

Write a java program to validate a PAN Card number. A PAN card number is said to be valid when it starts with 5 uppercase letters 4 digits and Followed by single upper case letter. A Valid PAN have only 10 letters.

For example: a pan card number AMEPJ2585B is valid where as AM525LDKF is invalid.

Given below is the java program which makes use of regular expressions to validate the PAN number. 

ValidPan.java


import java.util.*;
class ValidPAN 
{
 public static void main(String[] args) 
 {
  Scanner scn=new Scanner(System.in);
  int t=scn.nextInt();
  String s[]=new String[t];
  boolean output[]=new boolean[t];
  for(int i=0; i<s.length;i++)
  {
   s[i]=scn.next();
   boolean ss=s[i].matches("[A-Z]{5}\\d{4}[A-Z]{1}");
   output[i]=ss;
  }
  for(boolean b:output)
  {
   System.out.println(b);
  }
  
  

 }
}



Sample Output: 





Monday, July 13, 2015

Java program to convert the number in time format


Given below is the java program to print the time given in number format to String format.

For example: if you give input as 5 45, the below program will print Quarter to six


import java.util.*;
class TimeTest 
{
 public static void main(String[] args) 
 {
  String addString="";
  HashMap<Integer,String> hm=new HashMap<Integer,String>();
  hm.put(1,"one");hm.put(2,"two");hm.put(3,"three");hm.put(4,"four");hm.put(5,"five");
  hm.put(6,"six");hm.put(7,"seven");hm.put(8,"eight");hm.put(9,"nine");hm.put(10,"ten");
  hm.put(11,"eleven");hm.put(12,"twelve");hm.put(13,"thirteen");hm.put(14,"forteen");hm.put(15,"fifteen");
  hm.put(16,"sixteen");hm.put(17,"seventeen");hm.put(18,"eighteen");hm.put(19,"ninteen");hm.put(20,"twenty");
  hm.put(21,"twenty one");hm.put(22,"twenty two");hm.put(23,"twenty three");hm.put(24,"twenty four");hm.put(25,"twenty five");
  hm.put(26,"twenty six");hm.put(27,"twenty seven");hm.put(28,"twenty eight");hm.put(29,"twenty nine");hm.put(30,"thirty");

  Scanner scn=new Scanner(System.in);

  int hour=scn.nextInt();
  int minute=scn.nextInt();

  if(minute==00)
  {
   addString=hm.get(hour)+" o' clock";
  }
  else
   if(minute==15)
  {
   addString="quarter past "+hm.get(hour);
  }
  else
   if(minute==30)
  {
   addString="half past "+hm.get(hour);
  }
  else 
   if(minute>30&&minute==45)
  {
   addString="quarter to "+hm.get(hour+1); 
  }
  else
   if(minute>30&&minute!=45)
  {
   minute=60-minute;
   String midString="minute";
   String min=String.valueOf(minute);
   if(min.length()>1)
   {
    midString="minutes";
   }
   addString=hm.get(minute)+" "+midString+" to "+hm.get(hour+1); 
  }
  
  else
  {
   String midString="minute";
   String min=String.valueOf(minute);
   if(min.length()>1)
   {
    midString="minutes";
   }
   
   addString=hm.get(minute)+" "+midString+" past "+hm.get(hour); 
  }

  System.out.println(addString);

 }
}

Sample output

 

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