Java program to print a number in word [in 2 ways] - codeyourslf

print a number in word [in 2 ways] - codeyourslf

In this article you can learn how to print a number in it's corresponding words in java with 2 different approaches.

• Ex :- Input - 3621
•         Output - Three Six Two One

Here I also use my android phone to write code. I use android java ide i.e java N-IDE. Please support.

Approach:-1 "java program to print number in words using switch case"

public class usingSwitchCase {

  public static void main(String[] args) {

    int num = 3725;

    int temp = num;

    int revNum = 0;

    while(num > 0){

      revNum = revNum * 10 + (num % 10);

      num = num /10;

    }

    System.out.println(temp);

    printWord(revNum);

  }

  public static void printWord(int revNum){

    while(revNum > 0){

      int digit = revNum % 10;

      switch(digit){

        case 0: System.out.print("Zero "); break;

        case 1: System.out.print("One "); break;

        case 2: System.out.print("Two "); break;

        case 3: System.out.print("Three "); break;

        case 4: System.out.print("Four "); break;

        case 5: System.out.print("Five "); break;

        case 6: System.out.print("Six "); break;

        case 7: System.out.print("Seven "); break;

        case 8: System.out.print("Eight "); break;

        case 9: System.out.print("Nine "); break;

      }

      revNum = revNum / 10;

    }

  }

}

     

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Explanation

We can't access an integer from index 0 to last, but using modulus operator(%) we can access an integer in from last index to first. 

So, first I reverse the given number and store it in revNum variable. 

Now in switch case again I start accessing the number from last index, as a result the order of the number become same. 

Inside switch case, I assigned cases from 0 to 9. Here if the digit of a number is 3 then it will print Three.

Output

• 3 approaches to find reverse of number in java :- CLICK HERE

Approach:-2 "print digit of a number in words using String concept"

public class usingString {

    public static void main(String[] args){

      String num_s = "357";

      int len = num_s.length();

      System.out.println("using string concept: "+num_s);

      for(int i = 0; i < len; i++){

        printWords(num_s.charAt(i));

      }

    }

    

    public static void printWords(char c){

      switch(c){

        case '0': System.out.print("Zero "); break;

        case '1': System.out.print("One "); break;

        case '2': System.out.print("Two "); break;

        case '3': System.out.print("Three "); break;

        case '4': System.out.print("Four "); break;

        case '5': System.out.print("Five "); break;

        case '6': System.out.print("Six "); break;

        case '7': System.out.print("Seven "); break;

        case '8': System.out.print("Eight "); break;

        case '9': System.out.print("Nine "); break;

      }

    }

}

    

Output

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And if you have any questions or any doubt please ask me in the comment section, I will definitely answer to your questions.