包含标签：Java 的文章
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The Java – mybatis – mapped statements collection already contains values
When registering the mapper class when my server starts, I throw the following error message, [artifact:mvn] 2016-05-0…… -
Java – mockito: wanted but not referenced
I have the following test methods: MyClass myClass= Mockito.mock(MyClass.class); Mockito.when(myClass.methodUsedInMeth…… -
Java – nosuchmethoderror on some operating system versions
I don't know why I only receive this error on some Android versions (lower than 5.0) I called: myImageView.setImageDra…… -
How to set the axis (triple axis) in a fixed position on the screen in JavaFX?
How to set the axis (triple axis) in a fixed position on the screen in JavaFX? I am currently developing an applicatio…… -
How do I check that characters are neither letters nor numbers in Java?
So I wrote some code in Java, and I tried to find out if there was a way to write a line of code to check that the cha…… -
Java – create a method that can return two different contents
I'm trying to create a method that returns two different things based on the data type entered into it This class chan…… -
Java – hibernate condition groups start with timestamp by date
I have a table with a timestamp column and want to create a hibernate conditional projection. The results are grouped …… -
Java – compile a multi module Maven project without installing it into a local repository
There is a compilation (and packaging) problem in my multi module Maven project There was a problem compiling one of t…… -
Java – throw exceptions in finally and catch blocks
There is a problem with the exception thrown in catch. Finally, stop: class MyExc1 extends Exception {} class MyExc2 e…… -
Java – improve code that breaks down faster?
I want to finish this code faster It returns all the factors (prime) of a long number If longnumber is specific, it ob…… -
java – AlarmManager. AlarmClockinfo. Getnextalarmclock() caused NullPointerException
problem When I try to use AlarmManager The alarmclockinfo object getnextalarmclock() is thrown by my application: tryi…… -
Will JavaFX alert truncate messages?
See English answers > JavaFX alerts and their size 4 Example: import javafx.application.Application; import javafx.…… -
Java – exceptions in Google guava eventbus and event handlers
The guava eventbus documentation illustrates this If you know that some exceptions may occur, you can register the sub…… -
Java – how to delete firebase data after “n” days
I want to delete some old data in my friedbase I know this question has been asked a lot here, but it is still difficu…… -
Java – how to resolve jar conflicts at run time?
I have two jars in conflict They all contain a class with the same package name and class name For the same reason, I …… -
Java – dynamodbmapppingexception: mapping without hash key
When writing dynamodb Java application, if the table and its data model are not configured correctly, you can receive …… -
Java – stream mapping to find the value of the latest key
I have a map < < element, attributes >, which consists of the following (example) classes and instances of en…… -
Java – “unable to parse the symbol ‘request’ of Facebook graph API” error
I will the latest Facebook SDK 4.0 1 is included in the Android studio project I want to make the basic graph API call…… -
When they are Is java integer always = = when equals()?
See English answer > java: integer equals vs. = = 5 Integer x = 5; Integer y = x + 1; Integer z = y - 1; x.equals(z…… -
Get errors in C using vector and struct
What is the error in this Code: #include <iostream> #include <vector> #include <algorithm> using nam…… -
Java – ‘CMD’ is not recognized as an internal or external command and can run programs or batch files
When I build my project in NetBeans, it shows: 'cmd' is not recognized as an internal or external command,operable pro…… -
Is java “public static void main (string [] args)” the only way to create a main method?
I wonder if "Java main method" is the only way to create a main method in Java Java main methods: Solution The JVM nee…… -
What does Java – compareto() actually return?
The CompareTo () method in Java returns a value greater than / equal to / less than 0 But value itself is my problem W…… -
Java – hashcode contract that maintains specific conditions, and equals () depends on two integers
I have a basic structure class: class Employee { int eId; String eName; Employee(int id,String name) { this.eId= …… -
java – Stream. Is findany a short circuit operation?
Consider this code Object found = collection.stream() .filter( s -> myPredicate1(s)) .filter( s -> myPre…… -
Rxjava in scheduler IO () does not work in the thread
The problem is: I have observable and subscriber I'm trying Start observable in the IO () thread because it applies to…… -
Set boolean flag in Java 8 stream
I wonder what is the best practice for setting boolean flag values from Java streams Here is an example I want to do: …… -
Java – how to correctly throw a NullPointerException?
I need to write a method delete (), which accepts an int parameter K and deletes the k-th element in the linked list (…… -
When using java 8 update101, HashMap Entries cannot be cast to collection
After updating to Java 8 update 101, I encountered an exception in the following code It works well with Java 8 update…… -
How to effectively convert java code to Python?
I would be glad if you could tell me how to translate code from Java to python Solution If you want to translate java …… -
Java – insert different arrays in ArrayList
I inserted an array in ArrayList, but after inserting the second array, the first array is the same as the second arra…… -
Why doesn’t my java exchange function work?
See English answer > is java "pass by reference" or "pass by value"? 78 void swap(int a,int b) { int temp = a; ……