20145334 The 1th Week study summary of the Java program design by Zhao Literary writers

20145334 Zhao Writers "java program design" The 1th Week study summary textbook Learning content Summary

The first week of study ended in tension, we learned the basics of each course this week, and in the first week of the Java course we learned about the first two chapters, and the Java course was full of intense interest and curiosity.

The first chapter I understand the birth of Java and the history of version evolution, the current version is the Java SE8. Java's three main platforms are Java SE, Java EE, Java ME. One of the most common is Java SE, which has four components: JVM, JRE, JDK, Java language. The JVM is the Java program's operating system, and the JVM's executable is the. Class document, which allows Java to cross-platform. The JRE is the Java execution Environment, and the JDK is a compilation tool, including Javac, Appletviewer, Javadoc, and other utility programs. The JDK contains the JRE. Here is the DOS command line:

Dir: Lists the files and folders in the current directory

MD: Creating a Directory

RD: Deleting a directory

CD: Enter the specified directory

CD: Back to top level directory

Cd/: Go back to the root directory

Del: Delete Files

Exit: Exit DOS command line

Java features: Fully object-oriented, safe and reliable, easy to learn, cross-platform Java technology architecture:

Java EE (Enterprise Edition, Web application development)

Javase (Standard Edition, desktop, Business System application development)

Javame (small edition, electronic consumer products and embedded device development)

Knowledge Analysis:

Jvm:java virtual machines, the key to Java's cross-platform implementation

Jre:java runtime environment, including core class libraries required by JVM and Java programs

Jdk:java Development Kit, including JRE and Java development tools

Problems in teaching materials learning and the solving process

Learning process still encountered a lot of problems, originally thought that the first week of study will be more relaxed, but did not think, Java looks simple, but the actual operation is really profound ah, in the setting of the PATH environment variable, because of the size and character of the problem and got a long time, really confirmed a word, Details determine success or failure!

Problems in code debugging and the resolution process

To end the program, save the file name as a. Java form, or you will no longer be able to find the file in the command, and secondly I think it is particularly important that the "HelloWorld" in the "public class HelloWorld" must be the same as the file name, otherwise there will be a compile error. Because the file name of the problem I went wrong several times, I must pay attention to!

Other (sentiment, thinking, etc., optional)

In this week's study, I realized the charm of Java, Java is not as simple as C language programming language, Java is a platform, but also a resource library, this is the other programming language can not do. But I also feel the complexity of Java behind the huge resources of the difficulty, Java writing and running and other programming languages, but also more difficult, so we need to have a stronger expertise and operational ability to play Java, to use Java to make good things, Secondly, I am very supportive and agree with the teacher's learning model, both to allow us to learn independently, but also in the Forum's world to exchange experience, can avoid the end of the assault style of learning, but also to mobilize the interests of everyone and hobbies. Also hope that in the future study my level can have a great improvement, thank you teacher!

Learning progress Bar

	Number of lines of code (new/accumulated)	Blog volume (Add/accumulate)	Learning time (new/cumulative)	Important growth
Goal	5000 rows	30 Articles	400 hours
First week	200/200	2/2	15/15

Resources

• Java Learning Notes (8th Edition)
• Java Learning Note (8th Edition) Learning Guide
• ...

20145334 The 1th Week study summary of the Java program design by Zhao Literary writers