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Top Questions
311
votes
How do I update an entity using spring-data-jpa?
java
jpa
spring-data-jpa
asked Aug 9, 2012 at 10:33
stackoverflow.com
39
votes
newInstance vs new in jdk-9/jdk-8 and jmh
java
performance
java-8
jmh
java-9
asked Mar 14, 2017 at 12:55
stackoverflow.com
26
votes
HashMap resize method implementation detail
java
java-8
hashmap
hashcode
asked Jul 30, 2017 at 20:51
stackoverflow.com
24
votes
HashMap rehash/resize capacity
java
java-8
hashmap
asked Oct 7, 2018 at 20:50
stackoverflow.com
18
votes
Internal changes for limit and unordered stream
java
java-8
java-stream
java-10
asked Apr 27, 2018 at 14:40
stackoverflow.com
17
votes
static final fields vs TrustFinalNonStaticFields
java
jvm
jit
java-15
asked Jan 31, 2021 at 16:04
stackoverflow.com
15
votes
Parallel flatMap always sequential
java
java-8
java-stream
java-9
asked Jul 11, 2017 at 14:58
stackoverflow.com
14
votes
ImmutableCollections SetN implementation detail
java
collections
java-9
asked Jul 27, 2017 at 13:55
stackoverflow.com
14
votes
CAS vs synchronized performance
java-8
atomic
jmh
compare-and-swap
atomic-long
asked Sep 7, 2017 at 9:25
stackoverflow.com
14
votes
Collectors.toUnmodifiableList in java-10
java
java-stream
java-10
asked Mar 5, 2018 at 9:06
stackoverflow.com
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Top Answers
179
How do I create an empty Stream in Java?
stackoverflow.com
147
Does Java JIT cheat when running JDK code?
stackoverflow.com
97
Java 8 peek vs map
stackoverflow.com
88
Java 8 Lambda: Comparator
stackoverflow.com
77
Does a Future timeout kill the Thread execution
stackoverflow.com
67
Stream.peek() method in Java 8 vs Java 9
stackoverflow.com
62
How to make `Map::get` return either an `Optional` of the found value or `Optional.empty()`
stackoverflow.com
56
How can I create a parallel stream from an array?
stackoverflow.com
54
Understanding JodaTime DateTime.parse(string, formatter)
stackoverflow.com
54
Private constructor to avoid race condition
stackoverflow.com
51
What is a real life example of generic <? super T>?
stackoverflow.com
48
How can I create a list with N objects?
stackoverflow.com
46
Difference between Iterator and Spliterator in Java8
stackoverflow.com
43
When and how does HashMap convert the bucket from linked list to Red Black Trees?
stackoverflow.com
40
parallelStream vs stream.parallel
stackoverflow.com
38
Is there any need to switch to modules when migrating to Java 9 or later?
stackoverflow.com
37
Function.Function of Java 8 with multiple parameters
stackoverflow.com
36
how to pass --add-opens JDK module configuration to maven test
stackoverflow.com
35
Remove duplicate from List java8
stackoverflow.com
35
Create Stream<T> from single object
stackoverflow.com
35
Does using var with a literal result in a primitive or a primitive wrapper class?
stackoverflow.com
34
using java Stream to get a sum, average, and sort
stackoverflow.com
33
What is the difference between Stream.of and IntStream.range?
stackoverflow.com
32
Default hashCode() implementation for Java Objects
stackoverflow.com
31
Why are empty collections of different type equal?
stackoverflow.com
31
Java: groupingBy subvalue as value
stackoverflow.com
31
What issues should be considered when overriding equals and hashCode in Java?
stackoverflow.com
29
Java 8 Lambdas - Bitwise AND Operations
stackoverflow.com
28
Java 8 stream - merge collections of objects sharing the same Id
stackoverflow.com
27
Show the default value chosen for XX:ParallelGCThreads
stackoverflow.com
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