Throw a custom exception in optional in Java8

up vote
1
down vote

favorite

I have this piece of code where I want to throw an Exception wether the resource is not found

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(com.tdk.web.exception.ResourceNotFoundException(“menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

but I got a compilation Error:

com.tdk.web.exception cannot be resolved to a type

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

4

Optional.orElseThrow takes a Supplier that supplies/creates the exception. You appear to be passing the exception directly.
– Slaw
Nov 11 at 14:55

3

orElseThrow expects a Supplier as its only parameter. You can use a lambda expression to return your exception which is to be thrown. Supplier's only method accepts no argument and in this case expects you to return an Exception or a subclass. () -> new YourException() would suffice.
– MC Emperor
Nov 11 at 14:57

add a comment |

up vote
1
down vote

favorite

I have this piece of code where I want to throw an Exception wether the resource is not found

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(com.tdk.web.exception.ResourceNotFoundException(“menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

but I got a compilation Error:

com.tdk.web.exception cannot be resolved to a type

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

4

Optional.orElseThrow takes a Supplier that supplies/creates the exception. You appear to be passing the exception directly.
– Slaw
Nov 11 at 14:55

3

orElseThrow expects a Supplier as its only parameter. You can use a lambda expression to return your exception which is to be thrown. Supplier's only method accepts no argument and in this case expects you to return an Exception or a subclass. () -> new YourException() would suffice.
– MC Emperor
Nov 11 at 14:57

add a comment |

up vote
1
down vote

favorite

I have this piece of code where I want to throw an Exception wether the resource is not found

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(com.tdk.web.exception.ResourceNotFoundException(“menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

but I got a compilation Error:

com.tdk.web.exception cannot be resolved to a type

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

I have this piece of code where I want to throw an Exception wether the resource is not found

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(com.tdk.web.exception.ResourceNotFoundException(“menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

but I got a compilation Error:

com.tdk.web.exception cannot be resolved to a type

java java-8 optional

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

asked Nov 11 at 14:50

En NuNYet de Can CalÇadA

1,050859132

4

Optional.orElseThrow takes a Supplier that supplies/creates the exception. You appear to be passing the exception directly.
– Slaw
Nov 11 at 14:55

3

orElseThrow expects a Supplier as its only parameter. You can use a lambda expression to return your exception which is to be thrown. Supplier's only method accepts no argument and in this case expects you to return an Exception or a subclass. () -> new YourException() would suffice.
– MC Emperor
Nov 11 at 14:57

add a comment |

4

Optional.orElseThrow takes a Supplier that supplies/creates the exception. You appear to be passing the exception directly.
– Slaw
Nov 11 at 14:55

3

orElseThrow expects a Supplier as its only parameter. You can use a lambda expression to return your exception which is to be thrown. Supplier's only method accepts no argument and in this case expects you to return an Exception or a subclass. () -> new YourException() would suffice.
– MC Emperor
Nov 11 at 14:57

Optional.orElseThrow takes a Supplier that supplies/creates the exception. You appear to be passing the exception directly.
– Slaw
Nov 11 at 14:55

orElseThrow expects a Supplier as its only parameter. You can use a lambda expression to return your exception which is to be thrown. Supplier's only method accepts no argument and in this case expects you to return an Exception or a subclass. () -> new YourException() would suffice.
– MC Emperor
Nov 11 at 14:57

add a comment |

1 Answer
1

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up vote
4
down vote

accepted

Try this and make sure that com.tdk.web.exception.ResourceNotFoundException is accesible

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

Note the lambda () -> and quotes "menu ".

answered Nov 11 at 14:52

naXa

12.9k884131

add a comment |

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1 Answer
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active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
4
down vote

accepted

Try this and make sure that com.tdk.web.exception.ResourceNotFoundException is accesible

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

Note the lambda () -> and quotes "menu ".

answered Nov 11 at 14:52

naXa

12.9k884131

add a comment |

up vote
4
down vote

accepted

Try this and make sure that com.tdk.web.exception.ResourceNotFoundException is accesible

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

Note the lambda () -> and quotes "menu ".

answered Nov 11 at 14:52

naXa

12.9k884131

add a comment |

up vote
4
down vote

accepted

Try this and make sure that com.tdk.web.exception.ResourceNotFoundException is accesible

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

Note the lambda () -> and quotes "menu ".

answered Nov 11 at 14:52

naXa

12.9k884131

Try this and make sure that com.tdk.web.exception.ResourceNotFoundException is accesible

Menu menu = menuService.findById(addMenuAmount.getMenuId())

                    .orElseThrow(() -> new com.tdk.web.exception.ResourceNotFoundException("menu "  + 

                            addMenuAmount.getMenuId() + " not found "));

Note the lambda () -> and quotes "menu ".

answered Nov 11 at 14:52

naXa

12.9k884131

answered Nov 11 at 14:52

naXa

12.9k884131

answered Nov 11 at 14:52

naXa

12.9k884131

answered Nov 11 at 14:52

naXa

12.9k884131

add a comment |

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