通过Java模拟各种类型的耦合

耦合性是用来描述模块之间的独立程度。这里讲模块之间的耦合程度分为六个程度

无耦合R0:模块

数据耦合)来交换输入、输出信息的。

代码模拟：

package metrics.coupling.data;import metrics.coupling.data.Person;public class Main {public static void main(String[] args) {Person person = new Person(1.8, 56);double height = person.getHeight();double weight = person.getWeight();double BMI = BMIUtils.getBMI(height, weight);System.out.println("BMI:" + BMI);}}package metrics.coupling.data;public class Person {private double height;private double weight;public Person(double height, double weight) {super();this.height = height;this.weight = weight;}public Person() {super();// TODO Auto-generated constructor stub}public double getHeight() {return height;}public void setHeight(double height) {this.height = height;}public double getWeight() {return weight;}public void setWeight(double weight) {this.weight = weight;}}package metrics.coupling.data;public class BMIUtils {public static double getBMI(double height, double weight) {return weight / (Math.pow(height, 2));}}

标记耦合（复合数据类型），一般是指传的是改数据的地址。

代码模拟：

package metrics.coupling.stamp;import metrics.coupling.stamp.BMIUtils;import metrics.coupling.stamp.Person;public class Main {public static void main(String[] args) {Person person = new Person(1.8, 56);double BMI = BMIUtils.getBMI(person);System.out.println("BMI:" + BMI);}}package metrics.coupling.stamp;public class Person {private double height;private double weight;public Person(double height, double weight) {super();this.height = height;this.weight = weight;}public Person() {super();// TODO Auto-generated constructor stub}public double getHeight() {return height;}public void setHeight(double height) {this.height = height;}public double getWeight() {return weight;}public void setWeight(double weight) {this.weight = weight;}}package metrics.coupling.stamp;public class BMIUtils {public static double getBMI(Person person) {return person.getWeight() / (Math.pow(person.getHeight(), 2));}}

控制耦合

代码模拟：

package metrics.coupling.control;public class Main {public static void main(String[] args) {Person person = new Person("man");if("man".equals(person.getSex())){System.out.println("是一个男生");} else if("woman".equals(person.getSex())){System.out.println("是一个女生");} else{System.out.println("没准是泰国来的");}}}package metrics.coupling.control;public class Person {private String sex;public Person() {super();// TODO Auto-generated constructor stub}public Person(String sex) {super();this.sex = sex;}public String getSex() {return sex;}public void setSex(String sex) {this.sex = sex;}}

共同耦合R4:

代码模拟：

package metrics.coupling.common;public class Main {static StringBuffer mBuffer;public static void main(String[] args) {mBuffer = new StringBuffer("我是一个字符串 ");StringOP1.operate(mBuffer);StringOP2.operate(mBuffer);System.out.println(mBuffer.toString());}}package metrics.coupling.common;public class StringOP1 {public static void operate(StringBuffer mBuffer) {mBuffer.append("第一次修改；");}}package metrics.coupling.common;public class StringOP2 {public static void operate(StringBuffer mBuffer) {mBuffer.append("第一次修改；");}}

内容耦合R5:

代码模拟：

package metrics.coupling.content;public class Main {static StringBuffer mBuffer;public static void main(String[] args) {mBuffer = new StringBuffer("我是一个字符串 ");StringOP1.operate(mBuffer);//StringOP2.operate(mBuffer);System.out.println(mBuffer.toString());}}package metrics.coupling.content;public class StringOP1 {public static void operate(StringBuffer mBuffer) {mBuffer.append("第一次修改；");StringOP2.operate(mBuffer);}}package metrics.coupling.content;public class StringOP2 {public static void operate(StringBuffer mBuffer) {mBuffer.append("第一次修改；");}}

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