Maven + IDEA: cannot find String
I am trying out the workflow where you create and maintain your project primarily in Maven, and the Intellij IDEA project files are derived from that, which seems to be the recommended way these days.
My setup: Windows 7, JDK 11, Maven 3.6.0, IDEA Community 2018.2.6, the latter three all fairly fresh installs, not messed around with, verified as working in their own right.
https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html followed steps to create a Hello World project, verified it compiles and runs with Maven after adding the project property entries to specify we are not on Java 5 anymore.
Opened the project in IDEA by opening pom.xml and saying yes, this is a project file.
Opened App.java, and references to String are underlined in red: Cannot resolve symbol 'String'.
Tried invalidate caches / restart, no change.
Consensus as far as I can tell is that maven is the top build system and IDEA is the top IDE, so it must be possible to get them to work together. How?
java maven intellij-idea
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
add a comment |
I am trying out the workflow where you create and maintain your project primarily in Maven, and the Intellij IDEA project files are derived from that, which seems to be the recommended way these days.
My setup: Windows 7, JDK 11, Maven 3.6.0, IDEA Community 2018.2.6, the latter three all fairly fresh installs, not messed around with, verified as working in their own right.
https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html followed steps to create a Hello World project, verified it compiles and runs with Maven after adding the project property entries to specify we are not on Java 5 anymore.
Opened the project in IDEA by opening pom.xml and saying yes, this is a project file.
Opened App.java, and references to String are underlined in red: Cannot resolve symbol 'String'.
Tried invalidate caches / restart, no change.
Consensus as far as I can tell is that maven is the top build system and IDEA is the top IDE, so it must be possible to get them to work together. How?
java maven intellij-idea
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
2
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
1
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11
add a comment |
I am trying out the workflow where you create and maintain your project primarily in Maven, and the Intellij IDEA project files are derived from that, which seems to be the recommended way these days.
My setup: Windows 7, JDK 11, Maven 3.6.0, IDEA Community 2018.2.6, the latter three all fairly fresh installs, not messed around with, verified as working in their own right.
https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html followed steps to create a Hello World project, verified it compiles and runs with Maven after adding the project property entries to specify we are not on Java 5 anymore.
Opened the project in IDEA by opening pom.xml and saying yes, this is a project file.
Opened App.java, and references to String are underlined in red: Cannot resolve symbol 'String'.
Tried invalidate caches / restart, no change.
Consensus as far as I can tell is that maven is the top build system and IDEA is the top IDE, so it must be possible to get them to work together. How?
java maven intellij-idea
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
I am trying out the workflow where you create and maintain your project primarily in Maven, and the Intellij IDEA project files are derived from that, which seems to be the recommended way these days.
My setup: Windows 7, JDK 11, Maven 3.6.0, IDEA Community 2018.2.6, the latter three all fairly fresh installs, not messed around with, verified as working in their own right.
https://maven.apache.org/guides/getting-started/maven-in-five-minutes.html followed steps to create a Hello World project, verified it compiles and runs with Maven after adding the project property entries to specify we are not on Java 5 anymore.
Opened the project in IDEA by opening pom.xml and saying yes, this is a project file.
Opened App.java, and references to String are underlined in red: Cannot resolve symbol 'String'.
Tried invalidate caches / restart, no change.
Consensus as far as I can tell is that maven is the top build system and IDEA is the top IDE, so it must be possible to get them to work together. How?
java maven intellij-idea
java maven intellij-idea
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
asked Nov 26 '18 at 11:03
rwallacerwallace
9,6642174152
9,6642174152
2
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
1
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11
add a comment |
2
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
1
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11
2
2
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
1
1
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11
add a comment |
1 Answer
1
active
oldest
votes
Open Project Structure (by pressing F4):
Check the SDKs and Problems sections for any error.
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Open Project Structure (by pressing F4):
Check the SDKs and Problems sections for any error.
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
add a comment |
Open Project Structure (by pressing F4):
Check the SDKs and Problems sections for any error.
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
add a comment |
Open Project Structure (by pressing F4):
Check the SDKs and Problems sections for any error.
Open Project Structure (by pressing F4):
Check the SDKs and Problems sections for any error.
answered Nov 26 '18 at 11:12
user10639668
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
add a comment |
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
That works, except on my version the shortcut is Ctrl-Shift-Alt-S (or File menu) and different screen layout. Thanks!
– rwallace
Nov 26 '18 at 11:19
add a comment |
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2
This sounds like the project does not have a JDK defined since IDEA cannot find java's own classes. IDEA should ask you to define one on the top of the code area.
– f1sh
Nov 26 '18 at 11:05
it compiles and runs, but it can't find the String class?
– Stultuske
Nov 26 '18 at 11:08
@Stultuske Compiles and runs with command line maven, cannot find the String class in the IDE.
– rwallace
Nov 26 '18 at 11:08
1
@f1sh Ah, that was it, thanks! Ctrl-Shift-Alt-S, project settings and specify a JDK there.
– rwallace
Nov 26 '18 at 11:11