how to do for each in java

//itemset contains variables of type <Data Type>
for(<Data Type> item : itemset) {
  //loop
}

int [] intArray = { 10, 20, 30, 40, 50 };
        
for( int value : intArray ) {
   System.out.println( value );
}

public class ForEachLoopExample
{
   public static void main(String[] args)
   {
      int[] numbers = {2, 4, 6, 8, 10};
      // for each loop
      for(int n : numbers)
      {
         System.out.println(n);
      }
   }
}

public class JavaArray {

    public static void main(String[] s) {
        int[] age = new int[5];
        age[0] = 21;
        age[1] = 23;
        age[2] = 45;
        age[3] = 31;
        age[4] = 33;
        for (int a : age) {
            System.out.println("age= " + a);
        }

    }
}

for(int i : alist)
{
  i+=1
}