Ex12_1 코드

package org.javaro.lecture; import java.util.*; public class Ex12_1 { public static void main(String[] args) { System.out.println("조병수-20191121-콜렉션과 제너릭"); ArrayList arrayList = new ArrayList(); arrayList.add("first"); arrayList.add("second"); arrayList.add("third"); for(int i = 0; i <arrayList.size(); i++) { System.out.println((String)arrayList.get(i)); } } }

실행창

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