Design Patterns curriculum design model prototype model coding succinctly 9-2

1 classroom exercise

2 code analysis

2.1 1 code analysis (prototype pattern prior to use)

2.2 code analysis 2

2.3 3 code analysis

Code analysis 4 2.4

5 2.5 code analysis

1 classroom exercise

2 code analysis

2.1 1 code analysis (prototype pattern prior to use)

demand:

Mail categories:

Package com.geely.design.pattern.creational.prototype; 

public  class Mail {
     Private String name;
     Private String emailAddress;
     Private String Content; 

    / ** 
     * add initialization method. 1, while the purpose of cloning methods and out of the object, for Compared. 
     * Check whether the cloned object is initialized this out. 
     * / 
    Public Mail () { 
        System.out.println ( "the Constructor Class Mail" ); 
    } 

    / ** 
     * 2 is easy to print, adding toString method 
     * @return 
     * / 
    @Override 
    public String toString () {
         return "Mail { "+
                "name='" + name + '\'' +
                ", emailAddress='" + emailAddress + '\'' +
                ", content='" + content + '\'' +
                '}';
    }

    /**
     * 3    以下是get和set方法
     * @return
     */
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmailAddress() {
        return emailAddress;
    }

    public void setEmailAddress(String emailAddress) {
        this.emailAddress = emailAddress;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
}

Mail Tools:

Package com.geely.design.pattern.creational.prototype; 

Import the java.text.MessageFormat; 

/ ** 
 * tools message, save the message and send the message to achieve the template initialization functions 
 * / 
public  class MailUtil { 

    / ** 
     * transmission. 1 mail function to achieve 
     * key: placeholder character assignment to achieve 
     * @param mail
      * / 
    public  static  void the sendMail (Mail mail) { 
        String sOutPutContent = "send mail content to students} {0} to {1, e-mail address: { } 2 " ; 
        System.out.println (MessageFormat.format (sOutPutContent, mail.getName (), mail.getContent (), mail.getEmailAddress ())); 
    } 

    / ** 
     * save log 2 
     * /
    public  static  void saveOriginMail (Mail mail) { 
        System.out.println ( "content messages" + mail.getContent ()); 
    } 
}

Test categories:

Package com.geely.design.pattern.creational.prototype; 

/ ** 
 * test class: 
 * / 
public  class the Test { 

    / ** 
     * Test. 1 (prior to cloning) using the prototype pattern 
     * @param args
      * / 
    public  static  void main ( String [] args) { 
        mail mail = new new mail (); 
        mail.setContent ( "template initialization" ); 

        for ( int I = 0; I <10; I ++ ) { 
            mail.setName ( "name" + I); 
            mail .setContent ( "content" + I); 
            mail.setEmailAddress (I+ "@ imooc.com" ); 
            MailUtil.sendMail (mail); 
        } 
        MailUtil.saveOriginMail (mail); 
    } 

}

Print log:

Mail Class Constructor 
send students to name 0 0 message content is content, e-mail address is: 0 @ imooc.com 
to name a classmate to send mail content is content 1, e-mail address is: 1 @ imooc.com 
send mail content to name 2 students 2 content, e-mail address is: 2 @ imooc.com 
to send students to name 3 3 message content is content, e-mail address is: 3 @ imooc.com 
send a message to the content name 4 4 students for the content, e-mail address is: 4 @ imooc.com 
send 5 students to name the contents of the message content to 5, e-mail address is: 5 @ imooc.com 
to name 6 students send message content as 6 content, e-mail address is: 6 @ imooc.com 
send a message to the content name 7 students 7 content, e-mail address is: 7 @ imooc.com 
to 8 names of the students send the message content is content 8, e-mail address is: 8 @ imooc.com 
to send students to name 9 9 mail content is content, e-mail address is: 9 @ imooc.com
 message content is content 9
 
Process Finished with Exit code 0