数据对象如何定义为Java代码示例

想将数据保存为这样子：

[{
		"subject": {
			"code": "B123",
			"words": [{
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}, {
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}, {
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}],
			"wight": 3,
			"ct": 1575126920
		}
	}, {
		"subject": {
			"code": "C456",
			"words": [{
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}, {
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}, {
				"key": "gjc1",
				"wight": 9.8,
				"ct": 1575126920
			}],
			"wight": 3,
			"ct": 1575126920
		}
	}

]

　　

转换为Java后，如：

/**
  * Copyright 2019 bejson.com 
  */
package com.besjon.pojo;

/**
 * Auto-generated: 2019-11-30 23:24:14
 *
 * @author bejson.com ([email protected])
 * @website http://www.bejson.com/java2pojo/
 */
public class JsonRootBean {

    private Subject subject;
    public void setSubject(Subject subject) {
         this.subject = subject;
     }
     public Subject getSubject() {
         return subject;
     }

}

/**
  * Copyright 2019 bejson.com 
  */
package com.besjon.pojo;
import java.util.List;

/**
 * Auto-generated: 2019-11-30 23:24:14
 *
 * @author bejson.com ([email protected])
 * @website http://www.bejson.com/java2pojo/
 */
public class Subject {

    private String code;
    private List<Words> words;
    private int wight;
    private long ct;
    public void setCode(String code) {
         this.code = code;
     }
     public String getCode() {
         return code;
     }

    public void setWords(List<Words> words) {
         this.words = words;
     }
     public List<Words> getWords() {
         return words;
     }

    public void setWight(int wight) {
         this.wight = wight;
     }
     public int getWight() {
         return wight;
     }

    public void setCt(long ct) {
         this.ct = ct;
     }
     public long getCt() {
         return ct;
     }

}

　　

/**
  * Copyright 2019 bejson.com 
  */
package com.besjon.pojo;

/**
 * Auto-generated: 2019-11-30 23:24:14
 *
 * @author bejson.com ([email protected])
 * @website http://www.bejson.com/java2pojo/
 */
public class Words {

    private String key;
    private double wight;
    private long ct;
    public void setKey(String key) {
         this.key = key;
     }
     public String getKey() {
         return key;
     }

    public void setWight(double wight) {
         this.wight = wight;
     }
     public double getWight() {
         return wight;
     }

    public void setCt(long ct) {
         this.ct = ct;
     }
     public long getCt() {
         return ct;
     }

}

　　

直此，完成！！！