Ex12_3 코드
package org.javaro.lecture;
import java.util.*;
public class Ex12_3 {
public static void main(String[] args) {
System.out.println("조병수-20191121-콜렉션과 제너릭");
ArrayList arrayList = new ArrayList();
int idx = 0; String obj1 = "Korea"; String obj2 = "Seoul"; String obj3 = "Daejeon";
arrayList.add(obj1);
System.out.println("1="+arrayList.get(0));
arrayList.add(idx,obj2);
for(int i = 0; i
실행창
