NullPointerException - check null on class

Question

How to know the Employees.class is null or not using Java Relection?

Example Class: Employees.class

Problem:

employees.getName();
value getName is Mikel
employees is null
if employess != null is TRUE.
this class already 'new Employees()'

Employees.Class

public class Employees{

private Long id;<br>
private String kodStuff;<br>
private String Name;<br>

//Getter and Setter<br>
}

Example Process Method:

public void check(){
    Employees employees = new Empoyees;
    employees.setName("Mikel");
    employees.setKodStuff("KL370");
    //employees not save yet and process redirect check value of Name wuth return boolean
    Boolean empty = checkName(employees);

}

public boolean checkName(Employees employees){
    boolean notNull = false;
    if(employees !=null && StringUtils.isNotBlank(employees.getName())){ // this is line 11
        notNull = true;
    }
    return notNull;
}

Throws exception at line no '11':

java.lang.NullPointerException

How can i check null exception during process on line no.11?

"How to know the Employees.class is null". It isn't. The result of `A.class` is a `Class` for any class `A`. This part of your title and your question has no relationship to the rest of it. The code you posted cannot possibly throw `NullPointerException`. — user207421, May 12 '16 at 06:38
Must be something else. StringUtils is of apache? Otherwise check its implementation. `check` creates a new Employees, maybe remove `employees.` there so it sets the current employees. — Joop Eggen, May 12 '16 at 06:47
@EJP - Right. Unless he has `employees ==null` (assuming he "mistyped" it correctly here) — TheLostMind, May 12 '16 at 06:48

score 0 · Answer 1 · answered May 15 '16 at 19:54

0

Try checking if employees.getName() is null or not by doing:
employees.getName() != null

answered May 15 '16 at 19:54

Brokemia

54
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NullPointerException - check null on class

1 Answers1