new programming languages 2017

question 2 and reason, understand the situation ... Pairing and mutual evaluation other (sentiment, thinking, etc., optional)XxxXxxLearning progress Bar lines of code (new/cumulative) Blog Volume (Add/accumulate) Learning Time (new/cumulative) Important Growth Goal 5000 rows 30 Articles 400 hours First we

20165201 2017-2018-2 "Java program Design" 7th Week study summary textbook Study content summary 11th chapter code hosting last week exam wrong title summaryParsing: B: A subclass can have only one parent class, but a parent class may have more than one child classParsing: The A:abstract keyword cannot be applied to static, private, or final methods. E: cannot have method bodyParse: A: It should be dashed. C: The interface cannot invoke other non-inte

return the number of columns in the result set RS, calling other methods to implement the corresponding function. Transaction Transactions and processing: the application guarantees that the SQL statements in the transaction are either all executed or not executed. Transaction process steps Turn off autocommit mode with the Setautocommit (Booean B) method Handling transactions with the Commit method Processing a transaction failure with the rollback ()

database has not been connected ... Such as: Problem Solving method: I asked our class to use the same Mac classmate, and search the question on the Internet, the conclusion is: My JDK version is too high, I use JDK 9, but the current connector does not support this version, so I need to swap with JDK 8 Code Hosting last week exam error summaryAnswer: ACDEAnswer: Ab,select is notAnswer: Rowset inherits the interface resultset and populates its data area with populate!Learning progress

20165318 2017-2018-2 "Java program design" the second week to summarize the learning content of learning materialsThis week, we learned the contents of chapters II and III, and mastered the knowledge of basic data types, arrays, operators, expressions, and statements in Java.Summarizing the first week's learning experience, during this week's study, I read the textbook carefully and found a lot of small details that I had not noticed in my previous st

20165237 2017-2018-2 "Java Program Design" Tenth week exam complement and programming problem knowledge points1. A linked list is a data structure consisting of several objects called nodes, each of which contains a reference to the next node.2. The class method provided by the collections class for sorting and finding is as follows: public static sort (ListData Structure-Sort:Topic:In data structures and a

the machine and human to the time concept of the boundaries become clear, the sense of harvest is great.Last week's summary of the wrong quizWhich of the following commands can copy F1.txt to F2.txt?A. CP F1.txt F2.txtB. Copy F1.txt F2.txtC. Cat F1.txt > F2.txD. CP F1.txt | F2.txE. Copy F1.txt | F2.txAnswer: A C3. The following () method will cause the thread to go into a blocking state?A. Thread.Sleep ()B. Wait ()C. Notify ()D. Interrupt ()Answer: A and BCode hosting reviewed the classmates bl

, thinking, etc., optional) This week the study task is heavier, in the study tenth chapter, because lacks the eighth chapter knowledge, learns to be difficult, the understanding of the code is not deep enough, encounters does not understand only then forwards the corresponding knowledge point to learn the side to supplement, the efficiency is not high. ShouldAfter encountering the knowledge points that do not understand, will be related to the knowledge of the system to complement, and

20155317 Wang Ying 2016-2017-2 "Java Programming" 5th Week study SummarySummary of learning contents of textbookException Handling Collection and map exception inheritance schemas The wrong object inherits the Java.lang.Throwable class, and Throwable has two subclasses Java.lang.Error with Java.lang.Exceptions. A.erroe with its subclass instance represents a serious system error.

20165318 2017-2018-2 "Java Programming" Eighth Week study summaryDirectory Problems encountered in learning process and summary Summary of learning contents of textbook The 12th Chapter Java multithreading mechanism Code Hosting Code statistics Problems encountered in learning process and summary Q1: When running the textbook code 12_1, the results are as

program continues execution, false. And I read the first time did not remember clearly, just to judge the conditions to write the reverse, resulting in the program can not run, after correcting, it can be normal operation. Results such as: Issue 4: When debugging example10_2, there is no output after running. Solve the process: reading the relevant knowledge, found that I enter the stream open directory without the .java type of file, in this directory to add the .java type o

: The following description of the overload is a B. The constructor method cannot be overloaded.Reason: The understanding of the knowledge point is not thorough. Wrong question 3 and understanding: Access modifiers range from large to small sorted correctly: Public-protected-private Error 4 and understanding: The difference between a class method and an instance method: Object Invocation instance method, object, class name call class method, instance method operation instance, class vari

subclass overrides the member method with the same name as the parent class. If you want to access a member method of the same name in the parent class in a subclass, you need to use the Super keyword to refer to it.Note: Hiding and overwriting are different. Shadowing is for member variables and static methods, and overrides are for common methods.Subclasses are constructors that cannot inherit the parent class, but note that if the constructor of the parent class is parameterized, the constru

2017-2018-2 20165318 Experimental Report of Android program design--the cover of experimental reportCourse : Java Programming Class : 1653 class name : Sun Xiaolin No. : 20165318 Instructor: Lou Jia Peng experiment Date : May 14, 2018Experiment Time : 13:45-3:25 Experiment serial number : Experiment FourExperiment name : Android programmingExperimental Requirements : Students who do not have a Linu

Volume (Add/accumulate) Learning Time (new/cumulative) Important Growth Goal 5000 rows 30 Articles 400 hours First week 48/48 1/1 20/20 Second week 390/438 2/3 18/38 Third week 866/1304 1/4 18/56 Week Four 1105/2409 1/5 30/86 Week Five 1229/31

During The learning process in this chapter, I learned about the concept of inheritance, which is a core technology in Java programming and a mechanism for building new classes with existing classes. When a new class is defined to inherit a class, the new class inherits the method and domain of the class, adding

Today, March 17, 2017, Huawei held an intern online programming test, the old look, three questions, a total of 120 minutes, took me 25 minutes to take care of, Huawei programming topic should be very simple. First question: Enter a string, change the uppercase letters in the string to lowercase letters, the lowercase letters unchanged, the other characters are i

20165202 2017-2018-2 "Java Programming" 1th Week study summarySummary of learning contents of textbook Installing the JDK in Ubuntu environment Simple Java Program Writing Anti-compiler Javap.exe How to install and use Git Learn how to use vim problems in teaching materials learning and the solving process Java cannot be installed in UbuntuWorkaround:Refer to "How to i

20172325 2016-2017-2 "Java Program design" Fourth week study summary textbook study summary1. A further understanding of the definition and properties of classes, objects, declaration variables2. Learn how to write a class and apply it to the required program3. Learn the concepts and differences of formal parameters and arguments4. The role and use of modifiers, such as public and private5. Learn static classes, such as static and static variables6. T

20165218 2017-2018-1 "Java program design" The third week study summary textbook Learning summary-fourth chapter class and object oriented object language The first thing to do when you need to do something is to think about who is going to accomplish the task, which object is going to accomplish the task, and what the data is about. ———— "Java 2 Practical Tutorial" P51 Three properties of object-oriented