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for(data_type variable : array | collection){} 

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package vn.viettuts.javafeatures;

public class ForEachExample1 {

    public static void main(String args[]) {

        // dinh nghia mang arr

        int arr[] = { 10, 20, 30, 40 };

        // duyet cac phan tu cua mang

        for (int i : arr) {

            System.out.println(i);

        }

    }

}

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package vn.viettuts.javafeatures;

import java.util.ArrayList;

import java.util.List;

public class ForEachExample2 {

    public static void main(String[] args) {

        // Creating arraylist

        List<String> list = new ArrayList<String>();

        // Add objects to arraylist

        list.add("Java");

        list.add("C++");

        list.add("PHP");

        // Show list through for-each

        for (String obj : list) {

            System.out.println(obj);

        }

    }

}