How to get different variable name in result instead of getting the same variable name in POJO class

I am using java and spring boot in my project and I am trying to get the key as "BackGround" instead of "backGround". Could you please help me to get the expected result.

Thanks in advance!

Code:

        @Entity 
        public class EmpEntity{
        
        private String backGround;
        
        }
        

        @Data
        public class EmpPojo{
        
        @JsonProperty("BackGround")
        private String backGround;
        
        }

Impl:

        ObjectMapper obj=new ObjectMapper();
        EmpEntity ent=new EmpEntity();
        ent.setBackGround("value");
        EmpPojo pojo=obj.readValue(new Gson().toJson(ent),EmpPojo.class);

Excepted Output:

        {
        "BackGround":"value"
        }

@JsonProperty is the Jackson annotaion. For Gson you have to use @SerializedName from package com.google.gson.annotations

    @SerializedName("BackGround")
    private String backGround;