How to check null for getter methods in java

Question

I have a POJO class.

class Activity{
   private String name;

   public String getName()
      return name;
   }

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

im having belw condtions.its not enr=ering properly in those condtions accordingly

 if(stlmtTransRequestVO.getStlmtTransId()!=null && stlmtTransRequestVO.getPaymentTransId()!=null){
stlmtTransDtlsList = (List<StlmtTransResponseVO>) queryForList(
        "GET_STLMTPAY_TRANSACTIONS", stlmtTransRequestVO);


 }else if(stlmtTransRequestVO.getAgentId()!=null && stlmtTransRequestVO.getAgencyId()==null){
stlmtTransDtlsList = (List<StlmtTransResponseVO>) queryForList(
        "GET_AGENT_TRANSACTIONS", stlmtTransRequestVO);

 }else if(stlmtTransRequestVO.getAgencyId()!=null && stlmtTransRequestVO.getAgentId()==null){
stlmtTransDtlsList = (List<StlmtTransResponseVO>) queryForList(
        "GET_AGENCY_TRANSACTIONS", stlmtTransRequestVO);

 }else if(stlmtTransRequestVO.getAgencyId()!=null && stlmtTransRequestVO.getAgentId()!=null){

}

How to check this getter method for having data or not?

I have tried below scenarios but not working

   1) obj.getName()!=null
   2) obj.getName().isEmpty()

Answer 1

obj.getName() != null is right. But it depends on your definition of "having data". It might be: object.getName() != null && !obj.getName().isEmpty().

There are utilities to facilitate that, like apache commons-lang StringUtils.isNotEmpty(..)

Answer 2

if( obj.getName() != null && !"".equals(obj.getName()) ){
   //getName is valid
} 

Above is checking that name is not null and also it's not empty. Also "".equals(obj.getName()) is considered better approach than obj.getName().equals("").

Answer 3

Initialize like this:

private String name = "";

Then you can check it with:

obj.getName().isEmpty();