public void returnConnection(ZooKeeper client) { pool.offer(client); } public void close() throws InterruptedException { for (ZooKeeper zk : pool) { zk.close(); } pool.clear(); } // 添加监控逻辑 public void monitorPool() { // 收集监控数据 int activeConnections = pool.size(); // 假设...
public void action() { open(); close(); } public abstract void open(); public abstract void close(); } class CautionLight implements AlarmListener { public void alarm() { System.out.println("警示灯闪烁!"); } } class Annunciator implements Alarmistener { ...
下列选项中,针对关闭资源的方法结构如下:public static void close(AutoCloseable...autoCloseables),中的AutoCloseable...可变参数的作用说法正确的选项是哪一个()A.只能关闭一个资源B.没有传参方法会报错C.可以在一个方法中关闭多个资源D.以上都不对的答案是什么.
public void returnConnection(ZooKeeper client) { pool.offer(client); } public void close() throws InterruptedException { for (ZooKeeper zk : pool) { zk.close(); } pool.clear(); } } public class ZookeeperClientUsage { private final ZookeeperClientPool pool; public ZookeeperClientUsage(ZookeeperC...
publicabstractvoidopen(); publicabstractvoidclose(); } 或者: 1 2 3 4 interfaceDoor { publicabstractvoidopen(); publicabstractvoidclose(); } 但是现在如果我们需要门具有报警alarm( )的功能,那么该如何实现?下面提供两种思路: 1)将这三个功能都放在抽象类里面,但是这样一来所有继承于这个抽象类的子类都具...
public static void main(string[]A.{ int[]myArray={10,20,30,40); try{ DataoutputSystem dos=new DataOutputSystem(new FileOutputSystem("ints.dat")); for(int i=0;i dos.writeInt(myArray[i]); dos.___; } catch(IOException ioe) } }...
fis.close(); 结果一 题目 写出运行结果。class TwoObjects {public static void main(String[] args) {String s1="Hello";String s2="Hello";System.out.println(s1==s2);s1=new String("Hello");s2= new String("Hello");System.out.println(s1==s2);System.out.println(s1.equals(s2));}} 答案...
public void close(){ System.out.print(“B”); } public void printResource(){ System.out.print(“C”); } } and try(Resource r=new Resource()){ r.printResource(); }finally{ System.out.print(“D”); } 结果如何? A、 ACB B、 ADBC C、 ACD D、 ACBD E、 ACDB 查看答案 微信小...
在下面程序的空白处,应填入的正确选项是 import java.io.*; public class writeInt { public static void main(String[]a) { int[] myArray={10,20,30,40}; try{ DataoutputStream dos=new DataoutputStream(new FileOutputStream(“ints.dat”)); for(int i=0;i...
atransition metals and their respective open-shell compounds usually have low-lying states that are close to each other. 过渡金属和他们的各自打开壳化合物通常有是紧挨彼此的低状态。[translate] a长大了的我们为什么要学会如何在红尘中颠簸 Has grown up why do we want to learn how to jolt in the ...