For loop example to iterate an array | Enhanced For loop | for each loop in java | for loop

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For loop example to iterate an array:
Here we are iterating and displaying array elements using the for loop.

class ForLoopExample3 {
public static void main(String args[]){
int arr[]={2,11,45,9};
//i starts with 0 as array index starts with 0 too
for(int i=0; i_arr.length; i++){
System.out.println(arr[i]);
}
}
}
Output:

2
11
45
9
Enhanced For loop
Enhanced for loop is useful when you want to iterate Array/Collections, it is easy to write and understand.

Let’s take the same example that we have written above and rewrite it using enhanced for loop.

class ForLoopExample3 {
public static void main(String args[]){
int arr[]={2,11,45,9};
for (int num : arr) {
System.out.println(num);
}
}
}
Output:

2
11
45
9
Note: In the above example, I have declared the num as int in the enhanced for loop. This will change depending on the data type of array. For example, the enhanced for loop for string type would look like this:

String arr[]={"hi","hello","bye"};
for (String str : arr) {
System.out.println(str);
}




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