20145216 Shi-Yao's first experimental report on Java programming

Experiment with the familiar (Linux + Eclipse) content of a Java development environment 1. Compile and run a simple Java program using the JDK; 2. Edit, compile, run, and debug Java programs using Eclipse. Experimental requirements 1. Students who do not have a Linux base are advised to start with the Linux Basic Primer (new version), Vim Editor course; 2. Complete the experiment, write the experiment Report, the experiment Report template see QQ Group, pay attention to the experiment report focus is the running result, encountered problems (tool find, installation, use, program editing , commissioning, operation, etc.), solutions (empty methods such as "Check Network", "Ask classmates", "reading" and so on all get 0 points) and analysis (from which can get what revelation, what harvest, lessons, etc.); experimental knowledge point 1. Installation location and difference of JVM, JRE, JDK, 2. command line run JAVAC;JAVA;JAVAC-CP; Java-cp;3. Path,classpath,sourcepath setting method and application; 4. Package management: package;import;javac-d; 5. Eclipse (Netbeans) manages Java projects, debugging: breakpoints, stepping, etc.; 6. Java basic syntax: type and type conversion; variables; operators; flow control etc; 7. The use of the JDK help documentation. Experiment Step (i) Java program Development under command line

1. Install the JDK first:

2. Create a new text document in the specified folder and change the suffix. txt to. Java:

3. The. class file appears in the folder after compilation:

4. Run the results below the command line:

(ii) Commissioning and development of Java programs under idea

1. Run the Hello program:

Code:

Results:

2. Run the HELLOJDB program:

Code:

Results:

(iii) Exercise: Implement arithmetic and Test.

Code:

Results:

Experiment Experience

The first Java experiment is mainly to let us familiar with the Java development environment, because the first week has completed the installation of the JDK, the efficiency of the experiment is therefore high, the main time is put on the exercise above, the first time of their own programming, found not so easy to imagine, although has knocked many code, But when the DIY, still encounter a lot of problems, finally through the Internet to check the data, and finally successfully write the code out.

PSP (Personal software Process) Time:

Steps	Time Consuming	percentage
Demand analysis	10min	8.3%
Design	30min	25%
Code implementation	60min	50%
Test	20min	16.7%

20145216 Shi-Yao's first experimental report on Java programming