Recent Posts
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Java EE – reasons for different search results of the same elastic search query on two nodes
I have a two node elastic search setting. The same search query on one node leads to different results from the other …… -
java. Lang. IllegalStateException: commit has been called
I tried the following code, try { final Activity activity = ctx; FragmentTransaction ft = activity.getFragment…… -
Java – slow initialization of large and small objects
I came across this case today. I want to know the reason behind this huge difference The first version initializes a 5…… -
Multithreading – when using a method in a thread, “the type does not meet the required lifecycle”
I tried to use a method in a thread in rust, but I received the following error message Here is the sample code: use s…… -
Java – webelement or webdriver calls findelement method?
What's the difference if we use webelement or webdriver to call the findelement method? Does each of them have an adva…… -
Java – Stanford parser out of memory
I tried to run the Stanford parser in Ubuntu using Python code My text file is 500 MB and I tried to parse it I have a…… -
Java – use the same fragment multiple times in the same activity / layout
Not a 100% term, so please be patient I have an activity to compare two items side by side, one on the left and the ot…… -
Java – neo4j connection string
I use neo4j as the graphic database of my research papers. It is difficult for me to put neo4j2 3.1 connect with simpl…… -
Java – if you reopen the application, SharedPreferences is not saved
My sharing preferences will not be saved. If I reopen my game and the previously saved SharedPreferences data is not l…… -
In Java Correct method of setting read-only path in NiO 2
I'm confused... According to this Java page file The setreadonly() function is now a "legacy" function and should be c…… -
Java – whether UI threads can be blocked when the alert dialog box is displayed
I have this method. Basically, I wait for the items in the singleton queue to become empty. A background service is ru…… -
Java – how to write a small benchmark for GetBytes in jmh?
I'm new to jmh and benchmarking I have written a small test of the public byte [] GetBytes (string charsetname) method…… -
Create a program in Java. If a year is a leap year, return true; otherwise, return false
This is my code public class Leapyear{ public static void main(String []args){ for(int year =2000; year <=202…… -
Java – how do I get the next key from a specific key in the map?
I have something similar: Map< Integer,String> topology = new TreeMap< Integer,String>(); These include, f…… -
Java – serialization [replication] of lambda
See English answer > unable to deserialize lambda 2 I have two completely separate projects that contain a class It…… -
Protected references in Java
See English answers > understanding Java's protected modifier 6 package pac; public class A { protected A a; …… -
Java – how to make textflow optional
I made a textflow because I need to use multiple font poses (I have set the specific "text" to italic or normal) Once …… -
Java – I need to insert randomly generated numbers into the array
I examined these questions carefully with similar words or intentions, but it seems that I can't find any questions th…… -
Java – call mainactivity method (extend broadcast receiver) from other classes
I'm trying to call mainactivity's method display from another class (phonestatereceiver)_ notification. But got this e…… -
Java gives the wrong answer in computing
I want to do some calculations in Java, I know it's not so bad to do something in more steps, but why use additional t…… -
Java sorts a collection of date and time values
I'm using notes Jar Lotus Notes API to extract the date and time of E - mail When I add them to the collection, if I a…… -
Java: check whether the IP address is in the array list
Is there a special method to check whether there are IP addresses in ArrayList? Now I have an ArrayList composed of IP…… -
Implicit type conversion of Java – lambda expressions
Consider the following courses: public void method() { test(() -> { }); } void test(Runnable a) { System.o…… -
Java – how to link an object to a thread so that wait() and notify() work
In Java, object and thread are separate classes Although we have wait () / notify () methods, the Java object source c…… -
Java – the symbol ‘asynctask’ cannot be resolved in Android studio
I have a class that extends asynctask in Java, but Android studio will fail to resolve the symbol asynctask class GcmR…… -
Java – eclipse debugger does not stop at a conditional breakpoint
I have this java code in eclipse and I want to debug it This is the code: public Double repulsion(Node n1,Node n2) { …… -
Java – under what conditions can two different objects have the same hashcode () value?
All I know is: – "Int hashcode() returns the memory address of the object and the default hash value of the object“ If…… -
Simple ArrayList program – Java
I am trying to solve this problem: For some reason, the part I tried to get the lowest and highest scores didn't work …… -
The rcpp function adds the elements of a vector
I have a very long parameter vector (about 4 ^ 10 elements) and an index vector My goal is to add up all the parameter…… -
Java – bitmap font reversal when using assetmanager
Today, I started using assetmanager in libgdx to load my assets Before that, I had loaded everything into a separate c…… -
Serializing classes using byte arrays in Java
I have a class with byte array in Java When I serialize and deserialize class objects, the value of the byte array is …… -
Java – invoking methods from generic wildcard references
The following code is simplified to the basic point of the problem: public class GenericTest { private interface ……