Problem with Array.

[Gustavo Siqueira]

Hello all!

Not can understand ARRAY with FOR. See:
I use the FOR for show element of ARRAY in a single line.
So, see code:

Code:

public class arrayTest {  
      
    //inicialização do programa  
    public static void main(String args[])  
    {  
          
        int[] anArray; //declares an array of intengers  
          
        anArray = new int[10];  
          
        anArray[0] = 100; //initialize first element  
        anArray[1] = 200; //initialize second element  
        anArray[2] = 300;   
        anArray[3] = 400;  
        anArray[4] = 500;  
        anArray[5] = 600;  
        anArray[6] = 700;  
        anArray[7] = 800;  
        anArray[8] = 900;  
        anArray[9] = 1000;  
          
        for(int start = 0; start < anArray.length; start++)  
        {  
            System.out.printf("Elements: %d\n",start);  
        }  
          
          
    }  
  
}  

The code , is show this:
Elementos: 0
Elementos: 1
Elementos: 2
Elementos: 3
Elementos: 4
Elementos: 5
Elementos: 6
Elementos: 7
Elementos: 8
Elementos: 9

Now, exchange the code FOR:

  for(int start : anArray)
        {
        	System.out.printf("Elements: %d\n",start);
        }

The code is show different. See:

Elements: 100
Elements: 200
Elements: 300
Elements: 400
Elements: 500
Elements: 600
Elements: 700
Elements: 800
Elements: 900
Elements: 1000

Because ? a explication for that?
Thanks advance!

[Rob Camick]

The "for loop" is used to loop through all the values in the array.

In you first loop you are just displaying the value of the index. If you want to see the value in the array at the given index then you should use:

System.out.printf("Elements: %d\n", anArray[start]);   

[Gustavo Siqueira]

Hello!
Thanks you!
Problem solved!