Java stream map call another constructor [duplicate]

This question already has an answer here:

How to pass argument to class constructor when initialzed thru ::new in Java8

2 answers

I am trying to use java stream instead of forloop

ids.stream().map(AccountPermissionsUpdate::new)

I have created an other constructor,
my question is: how to call the second constructor

new AccountPermissionsUpdate(id,true)

Thanks

public AccountPermissionsUpdate(long accountId) 
 this.accountId = accountId;
 

public AccountPermissionsUpdate(long accountId, boolean forcedLogout) 
 this.accountId = accountId;
 this.forcedLogout = forcedLogout;

asked Nov 16 '18 at 4:50

Ben Luk

3101313

marked as duplicate by user7, Mark Rotteveel java
Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed.

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Nov 16 '18 at 14:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Just a side note (learned from Josh Bloch's book Effective Java), stream api is not a replacement for for loops, so be careful as it creates many stream instances in between. You can read more about that in his book though

– Ketan
Nov 16 '18 at 5:06

add a comment |

This question already has an answer here:

How to pass argument to class constructor when initialzed thru ::new in Java8

2 answers

I am trying to use java stream instead of forloop

ids.stream().map(AccountPermissionsUpdate::new)

I have created an other constructor,
my question is: how to call the second constructor

new AccountPermissionsUpdate(id,true)

Thanks

public AccountPermissionsUpdate(long accountId) 
 this.accountId = accountId;
 

public AccountPermissionsUpdate(long accountId, boolean forcedLogout) 
 this.accountId = accountId;
 this.forcedLogout = forcedLogout;

asked Nov 16 '18 at 4:50

Ben Luk

3101313

marked as duplicate by user7, Mark Rotteveel java
Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed.

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Nov 16 '18 at 14:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Just a side note (learned from Josh Bloch's book Effective Java), stream api is not a replacement for for loops, so be careful as it creates many stream instances in between. You can read more about that in his book though

– Ketan
Nov 16 '18 at 5:06

add a comment |

This question already has an answer here:

How to pass argument to class constructor when initialzed thru ::new in Java8

2 answers

I am trying to use java stream instead of forloop

ids.stream().map(AccountPermissionsUpdate::new)

I have created an other constructor,
my question is: how to call the second constructor

new AccountPermissionsUpdate(id,true)

Thanks

public AccountPermissionsUpdate(long accountId) 
 this.accountId = accountId;
 

public AccountPermissionsUpdate(long accountId, boolean forcedLogout) 
 this.accountId = accountId;
 this.forcedLogout = forcedLogout;

asked Nov 16 '18 at 4:50

Ben Luk

3101313

This question already has an answer here:

How to pass argument to class constructor when initialzed thru ::new in Java8

2 answers

I am trying to use java stream instead of forloop

ids.stream().map(AccountPermissionsUpdate::new)

I have created an other constructor,
my question is: how to call the second constructor

new AccountPermissionsUpdate(id,true)

Thanks

public AccountPermissionsUpdate(long accountId) 
 this.accountId = accountId;
 

public AccountPermissionsUpdate(long accountId, boolean forcedLogout) 
 this.accountId = accountId;
 this.forcedLogout = forcedLogout;

This question already has an answer here:

How to pass argument to class constructor when initialzed thru ::new in Java8

2 answers

java

asked Nov 16 '18 at 4:50

Ben Luk

3101313

asked Nov 16 '18 at 4:50

Ben Luk

3101313

asked Nov 16 '18 at 4:50

Ben Luk

3101313

asked Nov 16 '18 at 4:50

Ben Luk

3101313

asked Nov 16 '18 at 4:50

Ben Luk

3101313

marked as duplicate by user7, Mark Rotteveel java
Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed.

StackExchange.ready(function()
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Nov 16 '18 at 14:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

marked as duplicate by user7, Mark Rotteveel java
Users with the java badge can single-handedly close java questions as duplicates and reopen them as needed.

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Nov 16 '18 at 14:51

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Just a side note (learned from Josh Bloch's book Effective Java), stream api is not a replacement for for loops, so be careful as it creates many stream instances in between. You can read more about that in his book though

– Ketan
Nov 16 '18 at 5:06

add a comment |

Just a side note (learned from Josh Bloch's book Effective Java), stream api is not a replacement for for loops, so be careful as it creates many stream instances in between. You can read more about that in his book though

– Ketan
Nov 16 '18 at 5:06

Just a side note (learned from Josh Bloch's book Effective Java), stream api is not a replacement for for loops, so be careful as it creates many stream instances in between. You can read more about that in his book though

– Ketan
Nov 16 '18 at 5:06

add a comment |

2 Answers
2

active

oldest

votes

ids.stream().map(id -> new AccountPermissionsUpdate(id, true));

You will call it like this.

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

add a comment |

Try out below code:

ids.stream().map(element -> new AccountPermissionsUpdate(element,true));

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

1

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

1

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

add a comment |

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

ids.stream().map(id -> new AccountPermissionsUpdate(id, true));

You will call it like this.

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

add a comment |

ids.stream().map(id -> new AccountPermissionsUpdate(id, true));

You will call it like this.

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

add a comment |

ids.stream().map(id -> new AccountPermissionsUpdate(id, true));

You will call it like this.

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

ids.stream().map(id -> new AccountPermissionsUpdate(id, true));

You will call it like this.

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

answered Nov 16 '18 at 4:55

Dang Nguyen

863623

add a comment |

Try out below code:

ids.stream().map(element -> new AccountPermissionsUpdate(element,true));

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

1

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

1

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

add a comment |

Try out below code:

ids.stream().map(element -> new AccountPermissionsUpdate(element,true));

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

1

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

1

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

add a comment |

Try out below code:

ids.stream().map(element -> new AccountPermissionsUpdate(element,true));

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

Try out below code:

ids.stream().map(element -> new AccountPermissionsUpdate(element,true));

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

edited Nov 16 '18 at 4:57

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

answered Nov 16 '18 at 4:54

Jignesh M. Khatri

501411

1

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

1

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

add a comment |

1

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

1

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

Wow you are fast, but the id seem not correct here, should be element?

– Dang Nguyen
Nov 16 '18 at 4:57

Yes. My bad. It should be element. I will update my answer. I just copied and pasted your code from your question, that's didn't notice that.

– Jignesh M. Khatri
Nov 16 '18 at 4:57

add a comment |

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