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"No suggestions" for autocompletion inside a lambda #1265
Description
Sometimes autocompletion is unable to provide suggestions inside a lambda
Environment
- Operating System: Windows 10
- JDK version: JDK 13
- Visual Studio Code version: VS Code 1.42.0
- Java extension version: 0.55.1
Steps To Reproduce
Copy-paste the code below in a Java file & try autocompletion. Note that autocompletion does work on the line outside the lambda.
import java.util.Map;
class Test {
static class Employee {
final String name;
Employee(String name) {
this.name = name;
}
String name() {
return name;
}
}
public static void main(String... args) {
var totals = Map.of(new Employee("John"), 0);
Employee e = new Employee("Jane");
//totals.put(e., 0);
List.of("foo").forEach(item -> {
totals.put(e., 0);
});
}
}Current Result
Expected Result
Autocompletion provides suggestions.
Reacted by Lucas Basquerotto
Activity
snjeza commentedon Feb 11, 2020
You have to add:
anthonyvdotbe commentedon Feb 11, 2020
Thanks for pointing out the missing import, I filed a separate issue for the fact that there's no error given for it.
However, I believe autocompletion should still work in this case, and be much more robust in general, even if the code contains syntax errors. For example in NetBeans (which I"ve been using for years and is far more robust in this regard), the example correctly marks the missing import, but also still gives me autocompletion:
snjeza commentedon Feb 11, 2020
We are using Eclipse JDT that behaves the same way.
snjeza commentedon Feb 11, 2020
@anthonyvdotbe you can enter a new bug at https://bugs.eclipse.org/bugs/enter_bug.cgi?product=JDT
fbricon commentedon Feb 17, 2020
Apparently, you don't get the error on the missing List import, because you've opened a standalone java file. See https://github.com/redhat-developer/vscode-java/wiki/%22Classpath-is-incomplete%22-warning
You can try to open the folder containing the Java file instead, and vscode-java will try to make better assumptions and report compilation errors too.
fbricon commentedon Feb 17, 2020
Sorry I've been catching up on emails, so I'm a bit late to the party. Now I see you got #1266
vitran96 commentedon Apr 21, 2024
I also encountered this problem in Smallrye Multiny
Stack trace from VSCode output:
robstryker commentedon Oct 29, 2026
When the lambda reads
eand it does not reade.I am able to see an error indicating the missing import ofjava.util.List.When the
Listclass is properly imported, I am able to see suggestions for completion.Works for me.