Java言語の繰り返し制御構文 - for文

for (①初期処理; ②繰り返し条件; ④継続処理) {
    ③繰り返し処理
}

int sum = 0;
for (int i=1; i<10000; i++) {
    sum = sum + i;
}

for (オブジェクト : 集合型のオブジェクト) {
    繰り返し処理
}

List <String> nameList = new ArrayList();
nameList.add("Jone");
nameList.add("Mike");

for (String name:nameList) {
    System.out.println(name);
}

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class TestFor {
    public static void main(String[] args) {
        System.out.println("***繰り返し構文***");
        int sum = 0;
        for (int i=1; i<10000; i++) {
            sum = sum + i;
        }
        System.out.println(sum);
        
        System.out.println("***繰り返し構文：List***");
        List <String> nameList = new ArrayList<String>();
        nameList.add("Jone");
        nameList.add("Mike");

        for (String name : nameList) {
            System.out.println(name);
        }

        System.out.println("***繰り返し構文：Set ***");
        Set <String>nameSet = new HashSet<String>();
        nameSet.add("Orange");
        nameSet.add("Apple");

        for (String name : nameSet) {
            System.out.println(name);
        }
        
        System.out.println("***繰り返し構文：Object[]***");
        String []names = {"Jone", "Mike"};

        for (String name : names) {
            System.out.println(name);
        }
    }

}