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Monthly Archives: August 2014

Collection:コレクションが空かどうか検査する

import java.util.Collection; import java.util.ArrayList; public class Main { public static void main(String[] args) { Collection c = new ArrayList(); System.out.println(c + ” is Empty ? > ” + c.isEmpty()); c.add(“hoge”); c.add(“foo”); c.add(“bar”); System.out.println(c + ” is Empty ? > ” + c.isEmpty()); } }