重构-ExtractClass

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提炼类

某个类做了2个类的事建立一个新类,将相关字段和函数从旧类搬移新类

建立新类
建立新旧类连接
move Field
决定是否是否对用户公开此TelephoneNumber类

public class Person {    private String name;    private String officeAreaCode;    private String officeNumber;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getOfficeAreaCode() {        return officeAreaCode;    }    public void setOfficeAreaCode(String officeAreaCode) {        this.officeAreaCode = officeAreaCode;    }    public String getOfficeNumber() {        return officeNumber;    }    public void setOfficeNumber(String officeNumber) {        this.officeNumber = officeNumber;    }}

重构代码如下：

public class Person {    private String name;    // 建立连接    private TelephoneNumber officeTelephone = new TelephoneNumber();    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    // move field    public String getOfficeNumber() {        return officeTelephone.getOfficeNumber();    }    public void setOfficeNumber(String officeNumber) {        officeTelephone.setOfficeNumber(officeNumber);    }    public String getOfficeAreaCode() {        return officeTelephone.getOfficeAreaCode();    }    public void setOfficeAreaCode(String officeAreaCode) {        officeTelephone.setOfficeAreaCode(officeAreaCode);    }}

public class TelephoneNumber {    private String officeAreaCode;    private String officeNumber;    public String getOfficeAreaCode() {        return officeAreaCode;    }    public void setOfficeAreaCode(String officeAreaCode) {        this.officeAreaCode = officeAreaCode;    }    public String getOfficeNumber() {        return officeNumber;    }    public void setOfficeNumber(String officeNumber) {        this.officeNumber = officeNumber;    }}

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