How to set default value for class attributes using java annotations [duplicate]

Question

I want to set default values if not specified by user. eg, for Boolean private isValid , if we don't specify any json value, then it should set false . I am using hibernate validator, @NotNull, @NotBlank, @Size, @Range...Is there any annotations to set default value for boolean, int, float, irrespective of data types. I tired hard, but did not come up with any solution. Still I am trying..Your help is highly appreciated ! Thank you

Presumably he might need his Boolean to be null if he has a legacy schema that allows null on that column. — Adam Gent
– Adam Gent, Commented Nov 14, 2014 at 13:57

Maksym · Accepted Answer · 2014-11-14 11:41:43Z

1

You can just do fallow in your class definition:

public YourClass{
....
private Boolean isValid=false;
....
}

answered Nov 14, 2014 at 11:41

Maksym

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2 Comments

sayan Over a year ago

I tried, but it is not working :(

Maksym Over a year ago

How do you initialize it ? Did you load it from database? Maybe you just have true in your database ?

Harshal Patil · Accepted Answer · 2014-11-17 06:26:43Z

0

Just add default value with column

@Column(name="isValid",columnDefinition="tinyint(1) default '0'")
private Boolean isValid;

edited Nov 17, 2014 at 6:26

answered Nov 14, 2014 at 12:12

Harshal Patil

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4 Comments

sayan Over a year ago

I get compilation error "create annotation Column", could you please mention the required jar. I am not using Hibernate ORM.

Harshal Patil Over a year ago

@sayan Get jar here mvnrepository.com/artifact/org.hibernate.javax.persistence/…

sayan Over a year ago

I tried, but it didnt work. I am not using Hibernate ORM for my code, that's why it didnt work, I guess. I am only using hibernate-validator jars for validation purpose, not hibernate orm. Is there anything to set default values using annotations ? Please help. thnx.

Harshal Patil Over a year ago

@sayan This is the only way to set default value using java JPA annotations. check edited answer and try again.

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