iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

simplify with comparingByValue()

This commit is contained in:
press0@gmail.com 2022-10-08 21:41:57 -05:00
parent c18ce8a0cf
commit 027cbaf9f9
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
core-java-modules/core-java-collections-maps-2/src/main/java/com/baeldung/map/mapmax/MapMax.java
View File

@ -1,7 +1,11 @@
package com.baeldung.map.mapmax;
import java.util.*;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
public class MapMax {
@ -34,15 +38,14 @@ public class MapMax {
public <K, V extends Comparable<V>> V maxUsingCollectionsMaxAndLambda(Map<K, V> map) {
Entry<K, V> maxEntry = Collections.max(map.entrySet(), (Entry<K, V> e1, Entry<K, V> e2) -> e1.getValue()
.compareTo(e2.getValue()));
Entry<K, V> maxEntry = Collections.max(map.entrySet(), Entry.comparingByValue());
return maxEntry.getValue();
}
public <K, V extends Comparable<V>> V maxUsingCollectionsMaxAndMethodReference(Map<K, V> map) {
Entry<K, V> maxEntry = Collections.max(map.entrySet(), Comparator.comparing(Map.Entry::getValue));
Entry<K, V> maxEntry = Collections.max(map.entrySet(), Entry.comparingByValue());
return maxEntry.getValue();
}
@ -51,8 +54,7 @@ public class MapMax {
Optional<Entry<K, V>> maxEntry = map.entrySet()
.stream()
.max((Entry<K, V> e1, Entry<K, V> e2) -> e1.getValue()
.compareTo(e2.getValue()));
.max(Entry.comparingByValue());
return maxEntry.get()
.getValue();
@ -62,7 +64,7 @@ public class MapMax {
Optional<Entry<K, V>> maxEntry = map.entrySet()
.stream()
.max(Comparator.comparing(Map.Entry::getValue));
.max(Entry.comparingByValue());
return maxEntry.get()
.getValue();