Use this tag for questions specific to Java 8 which is version 8 (internal number 1.8) of the Java platform, released on 18 March 2014. In most cases, you should also specify the java tag.
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ScheduledExecutorService not working with parameters
I am trying to run a scheduled job using scheduledexecutorservice interface. It is working when a create a runnable task but it is jot working when I am trying to call a method which returns Runnable. ... java multithreading spring-boot java-8 executorservice 
Dheeraj
- 85
How to convert from long+TimeUnit to Duration?
I'm migrating some signatures from f(long dur, TimeUnit timeUnit) to f(Duration duration), and would like to implement the former with the latter. Being on Java 8, I can't find any API to easily ... java java-8 java-time timeunit chronounit Adam Kotwasinski
- 3,840
Combine lists of 2 different objects into list of single object using Java 8 Stream API
I have two lists as below: List ids = Arrays.asList(1,2,3); List reps = Arrays.asList("abc","pqr","xyz"); Now I want to create list of Prediction objects with values ... arraylist java-8 java-stream user3812288
- 21
Standalone Nashorn with Java 11 throws java.lang.StackOverflowError upon eval
I came across an issue with Nashorn, when evaluating a large expression, it works fine in Java 8 , but throws a java.lang.StackOverflowError in Java 11. Exception in thread "main" java.... java maven java-8 java-11 nashorn Senthuran Ambalavanar
- 156
Future of a byte array deserialization in Java 8 [closed]
I have an async network call to be made. I have seen two approaches of achieving the same. public Future<byte[]> getRepsonse(Request request){ Future<byte[]> repsonseBytesFuture = ... java arrays asynchronous java-8 future bharatharatna puli
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When LockSupport.unpark() occur before LockSupport.park() , It would block in the park() method in the follow code, Why?
In javadoc , LockSupport.unpark() can occur before LockSupport.park() and guaranteed that next call to park is not to block. Makes available the permit for the given thread, if it was not already ... java debugging java-8 concurrency java.util.concurrent asiuf爱施德
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How to extract the instance value in the string efficently
I have a string "/p4products/nemis2/filehandlerU/encdv2/work/10098325" which is coming as input from CMD. In this string the "encdv" is the environment name and "2" is ... java java-8 lakshya saxena
- 15
Load java agent in java 8
I am trying to load a javaagent in java 8, in higher versions (9+) there is the VirtualMachine class but in java 8 it does not exist, I have read that this class exists in the tools.jar and can be ... java java-8 agent javaagents Dannn
- 21
why char[1024] shallow size is 2072
Here is a char array with length 1024. I dump Java program run in Java8 into a hprof file. I find the size of char[1024] is 2072. In my opinion, empty char array takes header(8 bytes) plus reference(4 ... java java-8 jvm CoXier
- 2,296
configuring java 8, spring boot and webflux with oracle database
is it possible to use java 8 spring boot with webflux, database and oracle? I'm using spring-boot version 2.2.10, java 8 example of my pom <dependency> <groupId>org.springframework.... oracle spring-boot java-8 reactive-programming spring-webflux Felipe Carvalho
- 24
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hierynomus smbj write - share file access denied issue
Using smbj to rite file to shared folder and the below code is giving me access denied issue. But i have mounted the same shared folder under "Network Locations" and i can write file to the ... java-8 smbj Pat
- 477
String to Streaming Output
I´m trying to convert String to StreamingOutput in Java8, but it trims a big part of the last part. The method that has an issue is: private StreamingOutput stringToStreamingOutput(String str) { ... java-8 Symeon Mattes
- 989
java.io.EOFException at org.apache.tomcat.util.net.NioEndpoint (tomcat 9 & openjdk 8)
I am upgrading the tomcat and openjdk version for a project. Target: Tomcat 9.0.63 and openjdk-8u322-b06. However, getting EOFException when using Tomcat 9.0.63 and openjdk-8u322-b06. I don't know how ... java java-8 http2 tomcat9 eofexception MLM
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Why get class cannot be cast to class java.lang.Comparable
I'm iterating all Student data using natural sorting method of java 8 sorted(). While iterating student data, get exception in IDE console class com.java8.Student cannot be cast to class java.lang.... java java-8 java-stream comparable Faeem azaz Bhanej
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Filter Java 8 list to contain elements based on thresholds defined in other list
I have a sample program below where subject passing marks thresholds are defined in Metadata. The studentMarks list should be filtered in a way so that the resulting list will contain all the subjects ... java-8 java-stream curious_brain
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