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DS-ch15 Memory Management and B-Trees

15.5 Exercises Reinforcement R-15.1 Julia just bought a new computer that uses 64-bit integers to address memory cells. Argue why Julia will never in her life be able to upgrade the main memory o...

DS-ch01

1.10 Exercises Reinforcement R-1.1 Write a short Java method, inputAllBaseTypes, that inputs a different value of each base type from the standard input device and prints it back to the standard...

回顾OCP 1Z0-816认证考试

群 OCA/OCP 考试交流QQ群 157563860 其实这篇文章起源于 Twitter 上以为委瑞内拉小哥问我关于 OCP 考试的问题,我只好写这个作为回应。但中英夹杂,如果是国内读者看起来可能有点难受,改天再更新整理一下。 注意,现在 1Z0-816 考试已经没有了,只有 1Z0-819 考试。 另外前段时间我录了个视频,放在B站小号这里,讲了一些关于考试的。 I start...

Java笔试题1

真题1 某知名互联网下载服务提供商软件工程师笔试题 一、选择题 1. 访问修饰符作用范围由大到小是( )。 A.private-protected-default-public B.public-protected-default-private C.private-default-protected-public D.public-default-protected-private...

OCP-1Z0-816模拟测试2回顾

1. Given class Booby { } class Dooby extends Booby { } class Tooby extends Dooby { } public class TestClass { Booby b = new Booby(); Tooby t = new Tooby(); public void do1(List<? super D...

第11章练习回顾

1. Which of the following is an advantage of the Java Platform Module System? B A. A central repository of all modules B. Encapsulating packages C. Encapsulating objects D. No defined types E. Pla...

RSocket与Spring Security简单整合

创建工程 greetings-service 在 start.spring.io 选择 2.3.0 M2 版本 Spring Boot,依赖项如下 Lombok RSocket Spring Security greetings-client 客户端的依赖...

OCP-1Z0-816 模拟测试1回顾

4. Given: Path p1 = Paths.get("c:\\temp\\test1.txt"); Path p2 = Paths.get("c:\\temp\\test2.txt"); Which of the following code fragments moves the file test1.txt to test2.txt, even if test2.txt e...

816考点速记

1. Unmodifiable collections using of/copyOf and Collections.unmodifiableXXX methods java.util.List and java.util.Set have of and copyOf static factory methods that provide a convenient way to crea...

816基准测试回顾

1. Which of the following annotations are retained for run time? @SuppressWarnings It is defined with @Retention(SOURCE) @Override It is defined with @Retention(...