#20175201张驰 实验三 敏捷开发与XP实践

实验步骤
（一）敏捷开发与XP
一.敏捷开发与XP实践-1

①实验要求：

敏捷开发与XP实践 http://www.cnblogs.com/rocedu/p/4795776.html, Eclipse的内容替换成IDEA

参考 http://www.cnblogs.com/rocedu/p/6371315.html#SECCODESTANDARD 安装alibaba 插件，解决代码中的规范问题。

在IDEA中使用工具（Code->Reformate Code）把下面代码重新格式化，再研究一下Code菜单，找出一项让自己感觉最好用的功能。提交截图，加上自己学号水印。

②实验代码：

public class CodeStandard {
public static void main(String [] args){
StringBuffer buffer = new StringBuffer();
buffer.append('S');
buffer.append("tringBuffer");
System.out.println(buffer.charAt(1));
System.out.println(buffer.capacity());
System.out.println(buffer.indexOf("tring"));
System.out.println("buffer = " + buffer.toString());
if(buffer.capacity()<20)
buffer.append("1234567");
for(int i=0; i<buffer.length();i++)
System.out.println(buffer.charAt(i));
}
}

产品代码：
public class CodeStandard {
public static void main(String[] args) {
StringBuffer buffer = new StringBuffer();
buffer.append('S');
buffer.append("tringBuffer");
System.out.println(buffer.charAt(1));
System.out.println(buffer.capacity());
System.out.println(buffer.indexOf("tring"));
System.out.println("buffer = " + buffer.toString());
if (buffer.capacity() < 20)
buffer.append("1234567");
for (int i = 0; i < buffer.length(); i++)
System.out.println(buffer.charAt(i));
}
}

（二）
二.敏捷开发与XP实践-2

①实验要求：

在码云上把自己的学习搭档加入自己的项目中，确认搭档的项目加入自己后，下载搭档实验二的Complex代码，加入不少于三个JUnit单元测试用例，测试成功后git add .; git commit -m "自己学号 添加内容"；git push;

提交搭档项目git log的截图，包含上面git commit的信息，并加上自己的学号水印信息。

②实验代码：

1.搭档码云链接：https://gitee.com/pyc-1751/chapter_1_of_java.git

2.产品代码：

public class Complex {
// 定义属性并生成getter,setter
double RealPart;
double ImagePart;

// 定义构造函数
public Complex(){
}
public Complex(double R,double I){
RealPart=R;
ImagePart=I;
}

//Override Object
public boolean equals(Complex m){
if(m.RealPartthis.RealPart&&m.ImagePartthis.ImagePart){
return true;
}
else{
return false;
}
}
public String toString(){
if (this.RealPart != 0 && this.ImagePart > 0) {
return this.RealPart + " + " + this.ImagePart + "i";
} else if (this.RealPart != 0 && this.ImagePart == 0) {
return String.valueOf(this.RealPart);
} else if (this.RealPart != 0 && this.ImagePart < 0) {
return this.RealPart + " - " + -this.ImagePart + "i";
} else if (this.RealPart == 0 && this.ImagePart != 0) {
return this.ImagePart + "i";
} else {
return "0";
}
}

// 定义公有方法:加减乘除
Complex ComplexAdd(Complex a){
return new Complex(this.RealPart + a.RealPart, this.ImagePart + a.ImagePart);
}
Complex ComplexSub(Complex a){
return new Complex(this.RealPart - a.RealPart, this.ImagePart - a.ImagePart);
}
Complex ComplexMulti(Complex a){
return new Complex(this.RealPart * a.RealPart - this.ImagePart * a.ImagePart,
this.ImagePart * a.RealPart + this.RealPart * a.ImagePart);
}
Complex ComplexDiv(Complex a){
return new Complex((this.ImagePart * a.ImagePart + this.RealPart * a.RealPart) / (a.ImagePart * a.ImagePart + a.RealPart * a.RealPart),
(this.RealPart * a.ImagePart - this.ImagePart * a.RealPart) / (a.ImagePart * a.ImagePart + a.RealPart * a.RealPart));
}

}

测试代码：
import junit.framework.TestCase;
public class ComplexTest extends TestCase {
Complex a = new Complex(1, 5);
Complex b = new Complex(2, -3);

public void testEquals() {
assertEquals(true, a.equals(a));
assertEquals(false, b.equals(a));
}

public void testToString() {
assertEquals("1.0 + 5.0i", a.toString());
assertEquals("2.0 - 3.0i", b.toString());
}

public void testComplexAdd() {
assertEquals("3.0 + 2.0i",a.ComplexAdd(b).toString());
assertEquals("4.0 - 6.0i",b.ComplexAdd(b).toString());
}

public void testComplexSub() {
assertEquals("-1.0 + 8.0i",a.ComplexSub(b).toString());
assertEquals("0",b.ComplexSub(b).toString());
}

public void testComplexMulti() {
assertEquals("-24.0 + 10.0i",a.ComplexMulti(a).toString());
assertEquals("17.0 + 7.0i",a.ComplexMulti(b).toString());
}

public void testComplexDiv() {
assertEquals("1.0",a.ComplexDiv(a).toString());
}

}

3.运行截图：

3-4重构