-
第一部分：
-
要求：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。
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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。
1 public class CodeStandard {
2 public static void main(String [] args){
3 StringBuffer buffer = new StringBuffer();
4 buffer.append(‘S‘);
5 buffer.append("tringBuffer");
6 System.out.println(buffer.charAt(1));
7 System.out.println(buffer.capacity());
8 System.out.println(buffer.indexOf("tring"));
9 System.out.println("buffer = " + buffer.toString());
10 if(buffer.capacity()<20)
11 buffer.append("1234567");
12 for(int i=0; i<buffer.length();i++)
13 System.out.println(buffer.charAt(i));
14 }
15 }
- 首先在IDEA中安装alibaba插件， Settings → Plugins → Marketplace ，然后在搜素栏输入 Alibaba ，即可看到 Alibaba Java Code Guidelines 插件，点击Install进行安装，然后重启IDE生效。
- 使用比较简单：在项目名称上单击右键，在弹出菜单上选择“
编码规约扫描”
随后即可- 随后即可根据报错内容进行规范修改
- 我们可以使用 Code → Reformat Code （或 Ctrl + Alt +L ）规范缩进，规范后的代码如下：
- code菜单中，我感觉最好用的功能就是 Move Statement Up 和 Move Statement Down ,整行移动简直不要太好玩（划掉），太方便！
1 public class Complex {
2 // 定义属性并生成getter,setter
3 double RealPart;
4 double ImagePart;
5
6 // 定义构造函数
7 public Complex(){
8 }
9 public Complex(double R,double I){
10 RealPart=R;
11 ImagePart=I;
12 }
13
14 public static double RealPart(double v) {
15 return 1;
16 }
17
18 public static double ImagePart(double v) {
19 return 0;
20 }
21
22 //Override Object
23 public boolean equals(Complex m){
24 if(m.RealPart==this.RealPart&&m.ImagePart==this.ImagePart){
25 return true;
26 }
27 else{
28 return false;
29 }
30 }
31 public String toString(){
32 if (this.RealPart != 0 && this.ImagePart > 0) {
33 return this.RealPart + " + " + this.ImagePart + "i";
34 } else if (this.RealPart != 0 && this.ImagePart == 0) {
35 return String.valueOf(this.RealPart);
36 } else if (this.RealPart != 0 && this.ImagePart < 0) {
37 return this.RealPart + " - " + -this.ImagePart + "i";
38 } else if (this.RealPart == 0 && this.ImagePart != 0) {
39 return this.ImagePart + "i";
40 } else {
41 return "0";
42 }
43 }
44
45 // 定义公有方法:加减乘除
46 Complex ComplexAdd(Complex a){
47 return new Complex(this.RealPart + a.RealPart, this.ImagePart + a.ImagePart);
48 }
49 Complex ComplexSub(Complex a){
50 return new Complex(this.RealPart - a.RealPart, this.ImagePart - a.ImagePart);
51 }
52 Complex ComplexMulti(Complex a){
53 return new Complex(this.RealPart * a.RealPart - this.ImagePart * a.ImagePart,
54 this.ImagePart * a.RealPart + this.RealPart * a.ImagePart);
55 }
56 Complex ComplexDiv(Complex a){
57 return new Complex((this.ImagePart * a.ImagePart + this.RealPart * a.RealPart) / (a.ImagePart * a.ImagePart + a.RealPart * a.RealPart),
58 (this.RealPart * a.ImagePart - this.ImagePart * a.RealPart) / (a.ImagePart * a.ImagePart + a.RealPart * a.RealPart));
59 }
60 }
1 import junit.framework.TestCase;
2 import org.junit.Test;
3
4 public class ComplexTest extends TestCase {
5 Complex a = new Complex(0.0, 2.0);
6 Complex b = new Complex(-1.0, -1.0);
7 Complex c = new Complex(1.0,2.0);
8 @Test
9 public void testgetRealPart() throws Exception {
10 assertEquals(1.0, Complex.RealPart(0.0));
11 assertEquals(1.0, Complex.RealPart(-1.0));
12 assertEquals(1.0, Complex.RealPart(1.0));
13 }
14 @Test
15 public void testgetImagePart() throws Exception {
16 assertEquals(0.0, Complex.ImagePart(2.0));
17 assertEquals(0.0, Complex.ImagePart(-1.0));
18 assertEquals(0.0, Complex.ImagePart(2.0));
19 }
20 @Test
21 public void testComplexAdd() throws Exception {
22 assertEquals("-1.0 + 1.0i", a.ComplexAdd(b).toString());
23 assertEquals("1.0 + 4.0i", a.ComplexAdd(c).toString());
24 assertEquals("1.0i", b.ComplexAdd(c).toString());
25 }
26 @Test
27 public void testComplexSub() throws Exception {
28 assertEquals("1.0 + 3.0i", a.ComplexSub(b).toString());
29 assertEquals("-1.0", a.ComplexSub(c).toString());
30 assertEquals("-2.0 - 3.0i", b.ComplexSub(c).toString());
31 }
32 @Test
33 public void testComplexMulti() throws Exception {
34 assertEquals("2.0 - 2.0i", a.ComplexMulti(b).toString());
35 assertEquals("-4.0 + 2.0i", a.ComplexMulti(c).toString());
36 assertEquals("1.0 - 3.0i", b.ComplexMulti(c).toString());
37 }
38 @Test
39 public void testComplexComplexDiv() throws Exception {
40 assertEquals("-1.0 + 1.0i", a.ComplexDiv(b).toString());
41 assertEquals("0.8 - 0.4i", a.ComplexDiv(c).toString());
42 assertEquals("-0.6 - 0.2i", b.ComplexDiv(c).toString());
43 }
44 }
1 /**
2 * @author 20175221 zxj
3 * @date 2019/5/1
4 */
5 @SuppressWarnings("ALL")
6 public class Complex {
7
8 double realpart;
9 double imagepart;
10
11 public Complex() {
12 }
13
14 public Complex(double r, double i) {
15 realpart = r;
16 imagepart = i;
17 }
18
19 public static double realpart(double v) {
20 return 1;
21 }
22
23 public static double imagepart(double v) {
24 return 0;
25 }
26
27 public boolean equals(Complex m) {
28 if (m.realpart == this.realpart && m.imagepart == this.imagepart) {
29 return true;
30 } else {
31 return false;
32 }
33 }
34
35 @Override
36 public String toString() {
37 if (this.realpart != 0 && this.imagepart > 0) {
38 return this.realpart + " + " + this.imagepart + "i";
39 } else if (this.realpart != 0 && this.imagepart == 0) {
40 return String.valueOf(this.realpart);
41 } else if (this.realpart != 0 && this.imagepart < 0) {
42 return this.realpart + " - " + -this.imagepart + "i";
43 } else if (this.realpart == 0 && this.imagepart != 0) {
44 return this.imagepart + "i";
45 } else {
46 return "0";
47 }
48 }
49
50 Complex complexAdd(Complex a) {
51 return new Complex(this.realpart + a.realpart, this.imagepart + a.imagepart);
52 }
53
54 Complex complexSub(Complex a) {
55 return new Complex(this.realpart - a.realpart, this.imagepart - a.imagepart);
56 }
57
58 Complex complexmulti(Complex a) {
59 return new Complex(this.realpart * a.realpart - this.imagepart * a.imagepart,
60 this.imagepart * a.realpart + this.realpart * a.imagepart);
61 }
62
63 Complex complexDiv(Complex a) {
64 return new Complex((this.imagepart * a.imagepart + this.realpart * a.realpart) / (a.imagepart * a.imagepart + a.realpart * a.realpart),
65 (this.realpart * a.imagepart - this.imagepart * a.realpart) / (a.imagepart * a.imagepart + a.realpart * a.realpart));
66 }
67 }20175221曾祥杰 实验三《敏捷开发与XP实践》
原文：https://www.cnblogs.com/zxja/p/10787969.html
