java certification study guide

collection Problems in code debugging and the resolution processThis week's code hosting:Learning progress bar Learning progress bar lines of code (new /Cumulative) Blog volume ( new/cumulative) Learning time (new/cumulative) Important growth Goal 5000 rows 30 Articles 400 hours First week 150/150 1/1 15/15 Second week 150/400 1/2 15/30

kinds of syntax, inheritance architecture also obviously become abstract, there are many things with the API, to be good at checking Api,java in the class too much, do not need to remember all, But it will be checked and used. The program is through continuous learning, a little piece of patchwork out.Learning progress Bar Lines of code (new/cumulative Blog volume (Add/accumulate) Learning time (new/cumulative) Im

8 14 3581 148 64 2 Option: 4. Network Learning Guide (the following job content is selected) 1. Network Fundamentals1.3 telnet cec.jmu.edu.cn 80, try to answer: what do you see from the screen? Is the content returned from the home page of cec.jmu.edu.cn? What will I return if I try to use the Get/index http/1.0 command? See the experimental Task Book topic 1.2. Writing a TCP client program2.1 Refer to

often subject to changes in the index.Problems in teaching materials learning and the solving processThis week to study is the 8th, 9 chapters of knowledge, learning how to handle the exception of the code, the usual code will have some small problems, through the students and books to explain can be explained, through the knowledge of this chapter, my ability to deal with the code of abnormal error has improved a lot, I can also carry out even the c

. The InputStream instance can be specified using the properties's load () method. The InputStream instance is automatically closed when the load () method finishes. If you want to get all the keys in the map, you can call the map's keyset () to return the set object. If you want to get the key and value of the map at the same time, you can use the entrySet() method, which will return a set object, each element is an Map.Entry instance, you can call getKey() the Get key, call to getValue()

("Yes, good Yo");Case 2:Case 3:Case 4:Case 5:Case 6:Case 7:Case 8:Case 9:Default:System.out.println ("Wow, high salary yo");}}else if (GJ > 2000){int b = gj/1000;Switch (b){Case 2:Case 3:Case 4:system.out.println ("Hi, eat noodles");Case 5:Case 6:Case 7:Case 8:Case 9:system.out.println ("Oh, can Survive");}}Else{System.out.println ("Water only");}}}3. Enter the year and month you want to query from the keyboardOutputs the number of days in the corresponding month, and calculates the total numbe

, there are many places to see a few times can not understand, through comparative learning materials and video, just understand some obscure content.Problems in code debugging and the resolution processTo the students to learn the use of idea, learned to create a new class in the SRC folder, in order to run the code, because it is a copy of the code, so in writing and running the process did not appear any problems.Other (sentiment, thinking, etc., optional)Although not with idea, Baidu can not

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 week 100/200 2/2 20/20 Second week 300/200 2/4 18/38 Third week 800/500 3/7 22/60 Week Four /1000 /9 /90

) Learning Time (new/cumulative) Important Growth Goal 5000 rows 30 Articles 400 hours First week 13/13 1/30 19/19 Second week 426/426 3/30 12/12 Third week 562/562 4/30 15/15 Week Four 1552/1958 5/30 16/16 Week Five 1123/3086 6/30 14/14 Week Six 747/383

20165208 2017-2018-2 "Java program design" Nineth Week study summary textbook Learning content summary 13th Chapter URL Class The URL object contains three pieces of information: protocol, address, and resource Two ways to create a URL object:public URL (String spec) throws MalformedURLExceptionpublic URL(String protocol,String host,String file) throws MalformedURLException Initializing a U

Getoutputstream () will point to the input stream of the customer service socket object, and the input stream obtained by the object SC call getInputStream () will point to the output stream of the customer service socket object. After the connection is established, the server-side socket object calls the Getinetaddress () method to obtain a InetAddress object that contains the IP and domain name of the customer service side and the same customer service. Basic mode based on UDP co

errors, in accordance with the error prompts are corrected. But in this week's JDB test encountered some difficulties in this blog to do a related summaryCode Hosting(run result of statistics.sh script)Last week's summary of the wrong quizLearning progress Bar lines of code (new/cumulative) Blog Volume (Add/accumulate) Learning Time (new/cumulative) Important Growth Goal 5000 rows 30 Articles 400 hours

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

arrays:for (int score:scores) {System.out.printf ("Student Score:%d%n", score);}After reading the textbook carefully, we find that the meaning of the above code can be interpreted as:for (int i=0;iThis enhanced for loop is easier, and his idea is that the above program fragment takes the first element of the scores array, assigns it to the score variable, executes the loop body, and so on, until all the elements in the scores array have been accessed.Problems in code debugging and the resolutio

.Other (sentiment, thinking, etc., optional)Knowledge of network programming is necessary for us, and it is necessary to master it well.Code hosting:Learning progress Bar lines of code (new /Cumulative) Blog volume ( new/cumulative) Learning time (new/cumulative) Important growth Goal 5000 rows 30 Articles 400 hours First week 100/100 2/2 10/10 Initial knowledge of

20165208 2017-2018-2 "Java Program design" Seventh Week study summary textbook Study content summary 11th ChapterPreparatory work: Installation of XAMPPCreating a database tableQuery modify and update tables in the databaseFocus: Using Preprocessing statementsProblems in code debugging and the resolution processIssue one: A problem occurred at run time the public

1/4 10/10 Second week 300/500 1/5 10/20 Third week 800/1300 1/6 20/40 Week Four 700/2000 2/8 20/60 Week Five 1100/3100 2/10 30/90 Week Six / / / Seventh Week Eighth Week Reference: Why is it so difficult to estimate softwar

the topic see Flow and Document Experimental task book-Title 38.4 Choose to do (more difficult): further transformation of the above program, to obtain a link to the picture, such as img src= "Images/mail1.gif", and then processed, generate the picture of the actual link address http://cec.jmu.edu.com/images/mail1.gif. Finally, several addresses are generated and placed in a queue. Write the method, you can follow the queue of all the picture address, one time to download the picture.References

lines of code (new /Cumulative) Blog volume ( new/cumulative) Learning time (new/cumulative) Important growth Goal 5000 rows 30 Articles 400 hours First week 200/200 2/2 20/20 Second week 300/500 1/3 18/38 Third week 500/1000 1/4 22/60 Week Four 300/1300 1/5 30/90 We

. However, in accordance with the steps of the book Step by step, the final success shows the Helloword, the previous steps can not be remembered in any way as printed in the mind, very clear. Successful completion of the HelloWorld is also very happy, feel is a great breakthrough for themselves.Learning progress Bar| | Lines of code (new/cumulative) | Blog volume (Add/accumulate) | Learning time (NEW/cumulative) | Important growth || -------- | :----------------:|:----------------:|:-----------