How to make limitations for constructor values in java? [closed]

up vote
-4
down vote

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What is the right way in java to limit constructor values?

I want to make sure that its NOT possible to create objects using MyConstructor with the parameter int value > 5

example: (pseudo code)

public MyConstructor(value){

   if(value < 5){

       this.value = value;

   } 

}

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

closed as unclear what you're asking by JB Nizet, Andrew Tobilko, Roshana Pitigala, GhostCat, gnat Nov 11 at 17:59

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

5

1: that code won't compile 2: use an enum for compile-time safety
– Hovercraft Full Of Eels
Nov 11 at 13:51

1

Although the code is not valid Java code, I understand your question. An enum or a specialized type may help. Also, do you want the limitation at compile time or run time?
– Sid
Nov 11 at 13:52

3

Explain precisely what you actually want to achieve. What is the actual class, what is the actual parameter for, what does it represent, and why it must be less than 5. At the moment, your question is much too vague to provide good advice.
– JB Nizet
Nov 11 at 13:54

2

we normally throw an IllegalArgumentException if value >= 5
– Andrew Tobilko
Nov 11 at 14:05

You could throw IllegalArgumentException when an invalid value is passed.
– D.B.
Nov 11 at 14:06

|
show 2 more comments

up vote
-4
down vote

favorite

What is the right way in java to limit constructor values?

I want to make sure that its NOT possible to create objects using MyConstructor with the parameter int value > 5

example: (pseudo code)

public MyConstructor(value){

   if(value < 5){

       this.value = value;

   } 

}

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

closed as unclear what you're asking by JB Nizet, Andrew Tobilko, Roshana Pitigala, GhostCat, gnat Nov 11 at 17:59

5

1: that code won't compile 2: use an enum for compile-time safety
– Hovercraft Full Of Eels
Nov 11 at 13:51

1

Although the code is not valid Java code, I understand your question. An enum or a specialized type may help. Also, do you want the limitation at compile time or run time?
– Sid
Nov 11 at 13:52

3

Explain precisely what you actually want to achieve. What is the actual class, what is the actual parameter for, what does it represent, and why it must be less than 5. At the moment, your question is much too vague to provide good advice.
– JB Nizet
Nov 11 at 13:54

2

we normally throw an IllegalArgumentException if value >= 5
– Andrew Tobilko
Nov 11 at 14:05

You could throw IllegalArgumentException when an invalid value is passed.
– D.B.
Nov 11 at 14:06

|
show 2 more comments

up vote
-4
down vote

favorite

What is the right way in java to limit constructor values?

I want to make sure that its NOT possible to create objects using MyConstructor with the parameter int value > 5

example: (pseudo code)

public MyConstructor(value){

   if(value < 5){

       this.value = value;

   } 

}

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

What is the right way in java to limit constructor values?

I want to make sure that its NOT possible to create objects using MyConstructor with the parameter int value > 5

example: (pseudo code)

public MyConstructor(value){

   if(value < 5){

       this.value = value;

   } 

}

java

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

edited Nov 15 at 10:10

asked Nov 11 at 13:50

QickdmG dombu

506

asked Nov 11 at 13:50

QickdmG dombu

506

asked Nov 11 at 13:50

QickdmG dombu

506

closed as unclear what you're asking by JB Nizet, Andrew Tobilko, Roshana Pitigala, GhostCat, gnat Nov 11 at 17:59

5

1: that code won't compile 2: use an enum for compile-time safety
– Hovercraft Full Of Eels
Nov 11 at 13:51

1

Although the code is not valid Java code, I understand your question. An enum or a specialized type may help. Also, do you want the limitation at compile time or run time?
– Sid
Nov 11 at 13:52

3

Explain precisely what you actually want to achieve. What is the actual class, what is the actual parameter for, what does it represent, and why it must be less than 5. At the moment, your question is much too vague to provide good advice.
– JB Nizet
Nov 11 at 13:54

2

we normally throw an IllegalArgumentException if value >= 5
– Andrew Tobilko
Nov 11 at 14:05

You could throw IllegalArgumentException when an invalid value is passed.
– D.B.
Nov 11 at 14:06

|
show 2 more comments

5

1: that code won't compile 2: use an enum for compile-time safety
– Hovercraft Full Of Eels
Nov 11 at 13:51

1

Although the code is not valid Java code, I understand your question. An enum or a specialized type may help. Also, do you want the limitation at compile time or run time?
– Sid
Nov 11 at 13:52

3

Explain precisely what you actually want to achieve. What is the actual class, what is the actual parameter for, what does it represent, and why it must be less than 5. At the moment, your question is much too vague to provide good advice.
– JB Nizet
Nov 11 at 13:54

2

we normally throw an IllegalArgumentException if value >= 5
– Andrew Tobilko
Nov 11 at 14:05

You could throw IllegalArgumentException when an invalid value is passed.
– D.B.
Nov 11 at 14:06

1: that code won't compile 2: use an enum for compile-time safety
– Hovercraft Full Of Eels
Nov 11 at 13:51

Although the code is not valid Java code, I understand your question. An enum or a specialized type may help. Also, do you want the limitation at compile time or run time?
– Sid
Nov 11 at 13:52

Explain precisely what you actually want to achieve. What is the actual class, what is the actual parameter for, what does it represent, and why it must be less than 5. At the moment, your question is much too vague to provide good advice.
– JB Nizet
Nov 11 at 13:54

we normally throw an IllegalArgumentException if value >= 5
– Andrew Tobilko
Nov 11 at 14:05

You could throw IllegalArgumentException when an invalid value is passed.
– D.B.
Nov 11 at 14:06

|
show 2 more comments

1 Answer
1

active

oldest

votes

up vote
2
down vote

You can use JSR-303 Bean Validation API:

@Max(4)

int value

JSR-303 allows you to define declarative validation constraints against such properties:
public class PersonForm {



@NotNull

@Size(max=64)

private String name;



@Min(0)

private int age;

Specifically @Max

The value of the field or property must be an integer value lower than or equal to the number in the value element.
@Max(10)

int quantity;

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

add a comment |

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
2
down vote

You can use JSR-303 Bean Validation API:

@Max(4)

int value

JSR-303 allows you to define declarative validation constraints against such properties:
public class PersonForm {



@NotNull

@Size(max=64)

private String name;



@Min(0)

private int age;

Specifically @Max

The value of the field or property must be an integer value lower than or equal to the number in the value element.
@Max(10)

int quantity;

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

add a comment |

up vote
2
down vote

You can use JSR-303 Bean Validation API:

@Max(4)

int value

JSR-303 allows you to define declarative validation constraints against such properties:
public class PersonForm {



@NotNull

@Size(max=64)

private String name;



@Min(0)

private int age;

Specifically @Max

The value of the field or property must be an integer value lower than or equal to the number in the value element.
@Max(10)

int quantity;

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

add a comment |

up vote
2
down vote

You can use JSR-303 Bean Validation API:

@Max(4)

int value

JSR-303 allows you to define declarative validation constraints against such properties:
public class PersonForm {



@NotNull

@Size(max=64)

private String name;



@Min(0)

private int age;

Specifically @Max

The value of the field or property must be an integer value lower than or equal to the number in the value element.
@Max(10)

int quantity;

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

You can use JSR-303 Bean Validation API:

@Max(4)

int value

JSR-303 allows you to define declarative validation constraints against such properties:
public class PersonForm {



@NotNull

@Size(max=64)

private String name;



@Min(0)

private int age;

Specifically @Max

The value of the field or property must be an integer value lower than or equal to the number in the value element.
@Max(10)

int quantity;

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

edited Nov 11 at 14:02

answered Nov 11 at 13:56

user7294900

19.6k93157

answered Nov 11 at 13:56

user7294900

19.6k93157

answered Nov 11 at 13:56

user7294900

19.6k93157

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

add a comment |

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

That does not prevent you from constructing such objects though, I don't think that's what OP means. (plus it's a bit convoluted for doing such a basic thing)
– Joeri Hendrickx
Nov 15 at 15:27

add a comment |

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