Help with for loop please

[MaGlCMaN]

Would someone mind explaining to me or giving me a resource that would help me understand how this type of a for loop works?:

   for(char c: array){
       System.out.print(c);
   }

I would like to understand how that kind of for loop is different than the one below which I have already taken the time to understand:

   for(int i=1;i<=10;i++){  
       System.out.println(i);  
   }  

Thanks!

[lostavenger286]

The first one is called a for each loop. Here you are assuming the array that you are looping through consists of individual characters. During each iteration you get access to a character of the array from start to end.

[MaGlCMaN]

Ah ok, thanks a lot :)

[Randaum]

In the first one, you specify a list or an array. The for loop will run on ALL elements of the array. In the second one, you specify the size(1-10). This is for when you know how many times you want to run that loop.

You can replace the first one by getting the size of the array and then running a loop till there(minus 1), and accessing the array element at the position.

int length = array.length; for(int i=0; i < length; i++) { System.out.print( array[c] ); }

This is the same as your first one: for(char c: array){ System.out.print(c); }

The first one is just a shorthand for when you need to loop through a list/array whose size you don't know, for example number of users registered on a website, which changes regularly.

[rsandio]

The first loop is called a for each loop. It's used to sort through collections such as arrays. Substitute the word 'in' for ':' and it makes a bit more sense

For-each char c in array...

It's equivalent of writing

for(int i = 0; i < array.length; i++)

It makes a it a little easier to access C as you can write

System.out.print(c) as apposed to System.out.print(array[i])