Tutorial: Word Counts Program using Java

by eturo


I still remember when my teacher in Java programming (Basic Programming) gave us a hands-on lab activity that goes this way:

Problem:

Create a Java program that will allow the user to enter or type any string (phrase/paragraph in any length), then the program has the ability to count the number of words within that phrase or paragraphs.

Solution:

import java.util.Scanner;

public class countWords {
 public static void main(String[] args) {
  Scanner in = new Scanner(System.in);
  String s;
  int counter = 0;
  boolean startOfWord = false;

  System.out.print("Enter a string: ");
  s = in.nextLine();

  for(int i = 0; i < s.length(); i++) {
   if(s.charAt(i) != ' ') {
    if(!startOfWord) {
     startOfWord = true; //change this into true, 

      coz the first character of a word is found
     counter++; //a word is found, so increment counter
    }
   }
   else {
    startOfWord = false;
   }
  }

  System.out.print("Number of words: " + counter);

 }

}

I used BlueJ text editor when I'm creating, compiling, running and debugging Java programs (like the image below). This text editor is very cool and nice to used. To download this, click this link. Browse down the page and got to Software category under Programming.




I got the answer in 2 hours for that very short code. (yipih!) Try it now and Happy coding!

Tutorial: How to MYSQL Insert, Update, Select, and Delete Data Using PHP

Assuming we have database mydatabase and table user:











First, before we execute some sql script we must connect to our database.

The PHP code:

How to INSERT data?

The PHP code:



The Result:

How to UPDATE data?

The PHP code:

The result:

How to SELECT data?


Assuming that we have this table:








In PHP, we can actually select the first row of data or we can also select multiple rows in the database.


Selecting first row only:

The PHP code:









The result:







Selecting multiple rows:

The PHP code:

 

 The Result:

 

How to DELETE data?

The PHP code:








The result:









To learn the basic of PHP programming such as how to run PHP files and configuring your server, try to read here. Happy coding!