For Each Loop

The for-each loop introduced in Java5. It is mainly used to traverse array or collection elements. The advantage of for-each loop is that it eliminates the possibility of bugs and makes the code more readable.

Syntax foreach loop in Java foreach (enum Values) loop in Java foreach (ArrayList) loop in Java A. Syntax for(data_type variable : array | collection){}   B. foreach loop in Java For_Ex2.java public class For_Ex2 { int[] value = {10, 20, 30, 40, 50, 60}; void display() { for(int i : value) { System.out.println("foreach -  i : " + i); i = i * 100; // No defect on value.. } } } class MainClass { public static void main(String args[]) { For_Ex2 obj = new For_Ex2(); obj.display(); } } Sample Output foreach -  i : 10 foreach -  i : 20 foreach -  i : 30 foreach -  i : 40 foreach -  i : 50 foreach -  i : 60 C. foreach (enum Values) loop in Java For_Ex3.java public class For_Ex3 { enum days {Monday, Tuesday, Wednesday,  Thursday, Friday, Saturday, Sunday}; void display() { for(days day : days.values()) { System.out.println("Enum Value : " + day); } } } class MainClass { public static void main(String args[]) { For_Ex3 obj = new For_Ex3(); obj.display(); } } Sample Output Enum Value : Monday Enum Value : Tuesday Enum Value : Wednesday Enum Value : Thursday Enum Value : Friday Enum Value : Saturday Enum Value : Sunday D. foreach (ArrayList) loop in Java For_Ex4.java import java.util.ArrayList; public class For_Ex4 { ArrayList list = new ArrayList(); double sum = 0.0; void add() { list.add(111.120); list.add(102.658); list.add(653.123); } void display() { for(double i : list) sum = sum + i; System.out.println("The Sum of ArrayList Value is : " + sum); } } class MainClass { public static void main(String args[]) { For_Ex4 obj = new For_Ex4(); obj.add(); obj.display(); } } Sample Output The Sum of ArrayList Value is : 866.9010000000001