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IDEA-207434 Comprator.comparing(Map.Entry::getKey) -> Map.Entry.comparingByKey()

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GitOrigin-RevId: 9481f1e30f7262576ae132295fa27f9777396896
This commit is contained in:
Tagir Valeev
2019-10-11 09:06:02 +00:00
committed by intellij-monorepo-bot
parent 58b4cb2dd3
commit 6fdffcb1b5
5 changed files with 110 additions and 4 deletions
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java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/comparatorCanBeSimplified/afterComparingMapEntry.java
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// "Fix all 'Comparator can be simplified' problems in file" "true"
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.Collectors;
class Test {
void test() {
Map<String, Integer> unsortMap = new HashMap<>();
unsortMap.put("z", 10);
unsortMap.put("b", 5);
unsortMap.put("a", 6);
unsortMap.put("c", 20);
unsortMap.put("d", 1);
Map<String, Integer> result = unsortMap.entrySet().stream()
.sorted(Entry.comparingByValue(Comparator.reverseOrder()))
.sorted(Entry.comparingByValue())
.sorted(Entry.comparingByKey())
.sorted(Entry.comparingByKey(String.CASE_INSENSITIVE_ORDER))
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
(oldValue, newValue) -> oldValue, LinkedHashMap::new));
System.out.println("Sorted...");
System.out.println(result);
}
}
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/comparatorCanBeSimplified/beforeComparingMapEntry.java
+26
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@@ -0,0 +1,26 @@
// "Fix all 'Comparator can be simplified' problems in file" "true"
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.Collectors;
class Test {
void test() {
Map<String, Integer> unsortMap = new HashMap<>();
unsortMap.put("z", 10);
unsortMap.put("b", 5);
unsortMap.put("a", 6);
unsortMap.put("c", 20);
unsortMap.put("d", 1);
Map<String, Integer> result = unsortMap.entrySet().stream()
.sorted(Comparator.<caret>comparing(Map.Entry::getValue, Comparator.reverseOrder()) )
.sorted(Comparator.comparing(Map.Entry::getValue) )
.sorted(Comparator.comparing(Map.Entry::getKey) )
.sorted(Comparator.comparing(Entry::getKey, String.CASE_INSENSITIVE_ORDER) )
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
(oldValue, newValue) -> oldValue, LinkedHashMap::new));
System.out.println("Sorted...");
System.out.println(result);
}
}