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Fix predicate-not modern example to compile on Java 11 #159

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Merged
brunoborges merged 2 commits into from
Aug 5, 2026
Merged

Fix predicate-not modern example to compile on Java 11 #159

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369c3ad
Initial plan
Copilot Aug 5, 2026
f413eea
Fix predicate-not snippet for Java 11 compatibility
Copilot Aug 5, 2026
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2 changes: 1 addition & 1 deletion content/streams/predicate-not.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ oldCode: |-
modernCode: |-
List<String> nonEmpty = list.stream()
.filter(Predicate.not(String::isBlank))
.toList();
.collect(Collectors.toList());
summary: "Use Predicate.not() to negate method references cleanly instead of writing\
\ lambda wrappers."
explanation: "Before Java 11, negating a method reference required wrapping it in\
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3 changes: 2 additions & 1 deletion proof/streams/PredicateNot.java
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Expand Up @@ -2,12 +2,13 @@
//JAVA 25+
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

/// Proof: predicate-not
/// Source: content/streams/predicate-not.yaml
void main() {
List<String> list = List.of("hello", "", "world", " ");
List<String> nonEmpty = list.stream()
.filter(Predicate.not(String::isBlank))
.toList();
.collect(Collectors.toList());
}