L9ForLoopsDay2.java COMPLETE

import java.util.Scanner;

//Scope
//Nested for loops
//For loops to while loops
//Strings
public class L9ForLoopsDay2{
   public static void main(String[] args){
      //Declaring a variable inside of an if-statement, loop, or any block of code { }
      //limits that variable to existing inside of that block of code ONLY
      //The examples below are illegal. Try uncommenting them and running them to see
      // //Ex1
//       int a = 4;
//       if( a >= 3 ){
//          int b = 5;
//       }
//       System.out.println( b );
//       //Ex2
//       for(int i = 0; i < 3; i++){
//          System.out.println("hi");
//       }
//       System.out.println( i );

//       //Nested For Loop example
      System.out.println( "i\tj" );
      for( int i = 1; i <= 2; i++ ){
         for( int j = 1; j <= 3; j++ ){//this loop is inside and happens more often
            System.out.println( i + "\t" + j );//see that j changes more often and when j goes past 3, i gets incremented and inner loop starts again
         }
      }

      //Print a 10 x 10 box of *
      //or any of the other options in #18 on http://www.beginwithjava.com/java/loops/questions.html
      for(int b = 1; b <= 10; b++){
         for(int a = 1; a <= 10; a++){
            System.out.print("* ");
         }
         System.out.println();
      }
//       //For loop to While loop
//       for( int k = 0; k < 9; k++ ){
//          System.out.println( k );
//       }
//
//       int k = 0;//initialization expression goes before
//       while( k < 9 ){//control expression goes inside
//          System.out.println( k );
//          k++;//step expression goes at bottom of loop
//       }

//       //Loop over the characters in a String
      Scanner kb = new Scanner(System.in);
      System.out.print("Enter a word: ");
      String word = kb.next();
      for(int i = 0; i < word.length(); i++){//start loop @ index 0, go up until but not including the length, count by 1
         String letter = word.substring(i, i+1);//substring(i,i+1) gets one letter at a time (first thing you want, first thing you don't want)
         System.out.println( letter );
      }

      //Write code to find how many vowels the user's name contains. The user inputs their name from the keyboard
      System.out.print("Enter your name: ");
      String name = kb.next();
      int vowels = 0;
      for(int i = 0; i < name.length(); i++ ){
         String letter = name.substring(i, i+1).toLowerCase();
         if( letter.equals("a") || letter.equals("e") || letter.equals("i")
               || letter.equals("o") || letter.equals("u") ){
            vowels++;
         }
      }
      System.out.println( "Your name has " + vowels + " vowels" );
   }
}