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Example |
Description |
package |
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@NotEmpty |
@NotEmpty
private String firstName; |
Checks if:
object != null |
org.hibernate.validator.constraints.NotEmpty |
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@NotNull |
@NotNull
private Boolean isStudent; |
Checks if:
object != null and
object size >= 1 |
javax.validation.constraints.NotNull |
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@Size |
@Size(min=1,max=20)
private String lastName; |
Checks for min and max size |
javax.validation.constraints.Size |
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@DateTimeFormat |
@DateTimeFormat(pattern = "MM/dd/yyyy")
private Date dob; |
The custom patternto use to format the field. This is used for display purpose on the form too. |
org.springframework.format.annotation.DateTimeFormat |
|
@NumberFormat |
@NumberFormat(pattern="#.##")
private Double weight; |
The custom patternto format the Double value. |
org.springframework.format.annotation.NumberFormat |
|
@Pattern |
@Pattern(regexp="^[A-Za-z]*$")
private String lastName; |
Support to Regular expressions. In this example restricts to lower and upper case characters only. |
javax.validation.constraints.Pattern |
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@NotBlank |
@NotEmpty
private String firstName; |
Checks the size after trimming the String. Do not use to check for null. |
org.hibernate.validator.constraints.NotBlank |
