draftsight 2016

Java Nineth Week learning experienceThrough this week's study, learned the exception assertion and the log, has learnt to enable the assertion in the Eclipse compiler, but, regarding the exception, in the shorter teacher teaches the instance the procedure to be able to catch the exception, but in the Long program task Seven task Eight does not know is what kind of exception, No exception catch exception should be added, task nine does not define the L llegalscoreexceptionIllegalnameexception exc

---restore content starts---Learning Summary: Exceptions are divided into (non-fatal and fatal exceptions (Programs cannot be resolved: internal and resource exhaustion errors)) Custom exception classes are derived from the Exception catch exception with try statement p271 Getmassage () method // for obtaining information about exceptions Assertion: The assert keyword assert condition: expression; (condition is false exception occurs) enable assertion required on wi

This week has learned about exceptions and assertions, and it is easier and more manageable to call the system to customize the exception class. But when you define an exception class, you don't know what to do when you use it. In the last experiment, when the first character in the name is a number, there is a problem in catching the exception, writing the code but not the result. Results of less than 0 and greater than 100 can come out, but the format is not very correct. I hope the teacher ca

In the sixth chapter of the study, the concept of deep copy and shallow copy is clearly understood. All constant members and base type properties for a shallow copy of a copied object have the same copy value as the original object, and if the member field is an object, the object reference to the object field of the copied object still points to the original object. Deep copy, all member fields of the copied object contain the same value as the original object, and the Object field will point t

. Ultimately the almighty GitHub comes in handy, with the official driver of Tenda confirmed the chip (chipset) model for Realtek 8192eu so on GitHub on the search related relatively new still in maintenance drive found HTTPS://github.com/mange/rtl8192eu-linux-driver Realtek Realtek RTL8192EU this chipset drive. Look at it. The last update time is 2016.1 months and the target version is 4.30. I knew there was a chance when I saw it. So git clone mak

This problem must be large-scale occurrence, it is certainly the server side out of the problem, if it is a single user problem, give someone to repair the computer.This is the service. Microsoft Exchange RPC Client Access does not start because it is started manually.Some people, no brains, restart the server and do not check, there will be such a problem. Rather foolish.Exchange 2016 Server Web Edition can be opened, but Outlook clients cannot conne

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Startup and creation of threadsThread Class (Java.lang.Thread Class)In the Java language, the thread class represents threads, and all thread objects must be instances of the thread class or its subclasses. The role of each thread is to accomplish a certain task, in fact, to execute a program flow, also known as a sequential execution of code, Java uses the Run method to encapsulate such a program flow.Inherit the thread class to create and start threads1. Define a subclass of the thread class a

this week we have a good understanding of threading, master two ways to create threads, the first: inherit the thread class,Rewrite the Run method and write the code to execute in the Run method. The child class object is passed in when the thread object is created. The second type:Implement the Runable interface and override the Run method. The subclass object that is passed in to the interface when the thread object is created.When multiple threads start at the same time, each thread will prob

In the last week, we learned about threads by doing lab work, threads with multiple threads and a single thread. Multithreading can perform multiple tasks at once, and you can run a thread-based program at the same time as a multithreaded program. There are two ways to build a thread, first by inheriting the thread class, and by adding the method body to the run () method to determine what action the thread is going to perform, and the second by setting the class to implement the Runnable interf

for(i =0; I intK = i +7> CNT? Cnt:i +7; for(j = i +1; J if(P[num[j]].y-p[num[i]].y > Ans) Break; ans = min (dis (p[num[i]], p[num[j]), ans); } }returnAns;}intMain () {intN while(~SCANF ("%d", n)) { for(inti =0; i"%d %d", p[i].x, AMP;P[I].Y); Sort (p, p + N, cmpx);DoubleAns = closest (0N1); Ans = sqrt (ans); printf"%.2lf\n", ans); }}Other than thatStrictly speaking the data is to chuck the O (n^2) violence algorithm, but your grh with sin and cos to calculate the distance, t

be modified according to its own wishes.Iv. deploy and run the project on Tomcat1. After creating tomcat, you can quickly open the Tomcat Configuration page via the toolbar,You can also use the menu bar: Run, Edit configurations ..., select the tomcat7 you just created, select deployment, click the "+" sign on the right, and select Artifact2, select Web project, application context can be filled "/demoweb" (also can not fill), Apply3. Go back to the server panel and change the on ' Update ' act

1083 Alvinzh's youth memory I thoughtMedium problem, dynamic planning.Simplify the test instructions, take the number on a ring, the number is not adjacent, take the sum of the maximum value.Ring bad, can be solved into a column number, then the answer should be the following two cases of the larger.①: Take the first point, you can get the maximum value for the treasure [1,n-1] the maximum value.②: Do not take the first point, can get the maximum value for the treasure [2,n] the maximum value.Dy

. Finally, it can be AC, but why?Inexplicable AC, you should ask why. Code two and code three contrast, just space is smaller, for the second set of data, why a 1500ms direct T, and this 36ms brush past it? What's the hole in the second set of data?I'm straight: n is small in the second set of data, and AI and bi are small, but the number of data groups is a bit large. One reason can be understood as the initialization problem, the second reason is the heap space allocation problem, see how your

is already the 18th week of Java study, immediately facing the final exam, and immediately have to carry out the tense review state, feel also not ready, intends to review carefully this week, good preparation for the final exam, in this semester of Java learning, encountered a lot of difficulties also solved a lot, The 456 chapters of the focus of the content will be a little forgotten, the tenth chapter 12 of the content of the master can also, swing user interface components are not very good

Soon, a semester will be over, and Java learning is basically over. This week the teacher also lead us to review again, more than 700 pages of the book, although not just school so terrible, but think of the exam, the head is still big. Basic knowledge of Java basically mastered, but the problem is all out in the programming, simple some of the good, a little more complex points can not be made up; some chapters learn very seriously, learning time is good, after learning to forget, there are som

This document documents the process of using idea to export a war package and the solution to the problem. Although we are now using idea for development, I still use eclipse to fight the war package ....This is not the way to go.So try to pack it today with idea.The project uses the SSH framework and is not managed with Maven. The first step is to configure the Web application:exploded (already configured to skip to the second step):Open Project Structure (the default short

Through this chapter of learning, I know the program, process and the relationship between threads, know the Java implementation of the two ways of Multithreading: 1. Create a subclass of the thread class; 2. Define the class that implements the Runnable interface in the program. Thread interrupts, thread six states, multi-threaded scheduling, daemon threads, thread synchronization, and so on.201671010107 2016-2017-2 "Java Program Design" 14th Chapter

This week we learned about generic programming, which reduces the amount of code through generic classes. When calling a generic class, you can do a series of actions by changing the type variable. A generic class can have more than one type variable, and a type variable specifies the return type of the method and the type of the local variable. A generic method can be defined in a normal class or in a generic class, and if the class that implements the generic interface is a normal class, then

This week the study efficiency is very low, because did not have a good preview before, therefore the class cannot follow, also did not know how to summarize.In the blink of an eye half semester passed, think of this 10 weeks of study status, can say than freshman first semester also worse, at that time just contact computer language, learning Python, nothing, especially confused, and now learning two languages after learning Java, or so confused, class feel can understand, But just do not write