Java Enhanced For Loop(자바 향상된 반복문)

문법:

for(dataType item : array) {
    ...
}

• array - an array or a collection
• item - each item of array/collection is assigned to this variable
• dataType - the data type of the array/collection

---

Ex.1>

// print array elements 

class Main {
  public static void main(String[] args) {
      
    // create an array
    int[] numbers = {3, 9, 5, -5};
    
    // for each loop 
    for (int number: numbers) {
      System.out.println(number);
    }
  }
}

 

output>

3
9
5
-5

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Ex.2>

// Calculate the sum of all elements of an array

class Main {
 public static void main(String[] args) {
  
   // an array of numbers
   int[] numbers = {3, 4, 5, -5, 0, 12};
   int sum = 0;

   // iterating through each element of the array 
   for (int number: numbers) {
     sum += number;
   }
  
   System.out.println("Sum = " + sum);
 }
}

output>

Sum = 19

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출처: Programiz