父类与子类的继承测试方法

父类与子类的继承测试方法

如果父类有值，直接输出父类属性，否则打印输出继承中子类的属性值

package com.example.core.mydemo.extendtest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CommonConfigure {
    private Logger logger = LoggerFactory.getLogger(this.getClass());

    private String key;
    private String appId;
    private String host = "localhost";

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getAppId() {
        return appId;
    }

    public void setAppId(String appId) {
        this.appId = appId;
    }

}


package com.example.core.mydemo.extendtest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;

@Configuration
public class CityConfigure extends CommonConfigure {
    private Logger logger = LoggerFactory.getLogger(this.getClass());

    private String key = "shanghai";
    private String appId = "0001";


    @Override
    public String getKey() {
        return key;
    }

    @Override
    public void setKey(String key) {
        this.key = key;
    }

    @Override
    public String getAppId() {
        return appId;
    }

    @Override
    public void setAppId(String appId) {
        this.appId = appId;
    }

}


package com.example.core.mydemo.extendtest;

public class MyConfig extends CommonConfigure {
    private String key = "mykey";
    private String appId = "myAppId";

    @Override
    public String getKey() {
        return key;
    }

    @Override
    public void setKey(String key) {
        this.key = key;
    }

    @Override
    public String getAppId() {
        return appId;
    }

    @Override
    public void setAppId(String appId) {
        this.appId = appId;
    }
}


package com.example.core.mydemo.extendtest;

/**
 * 父类与子类的继承测试方法
 *
 * 打印输出： 如果父类有值，直接输出父类属性，否则打印输出继承中子类的属性值
 key=shanghai
 appId=0001
 host=localhost
 ------------------------------------------
 key=mykey
 appId=myAppId
 host=localhost
 */
public class ExtendTest {
    public static void main(String[] args) {
        CityConfigure config = new CityConfigure();
        print(config);

        System.out.println("------------------------------------------");

        MyConfig myConfig = new MyConfig();
        print(myConfig);
    }


    public static void print(CommonConfigure config){
        System.out.println("key=" + config.getKey());
        System.out.println("appId=" + config.getAppId());
        System.out.println("host=" + config.getHost());
    }
}