CompletionService接口定義了級別提交任務方法submit和獲取結果方法take,poll等
package test.java.util.concurrent;
import java.util.concurrent.CompletionService;
import org.junit.Test;
/**
* CompletionService的測試類
*
* @date 2020-07-01 00:17:48
*/
public class CompletionServiceTest {
//abstract
//interface
}