包含标签：Java 的文章
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Java – understanding TreeSet returns 0 during comparison
I created a student class like this: public class Student implements Comparable<Student> { private String f…… -
Leiningen: create an executable jar to run without Java – jar
I tried to understand how to package a command - line application written in clojure for distribution I don't want use…… -
How to copy files in Java through bufferedinputstream and bufferedoutputstream?
I want to use bufferedinputstream and bufferedoutputstream to copy large binaries from the source file to the target f…… -
Java date difference days
See English answers > Android / Java – date difference in days 18 Date nextCollectionDate = dispenseNormal.getDispe…… -
JavaFX button with multiple text lines
I need to create a toolbar on the screen. It has multiple buttons. Each button must have multiple lines of text For ex…… -
Is there any way to use the onresourcerequested callback of phantomjs in the Java driver?
I want to avoid loading CSS files in phantom JS I'm using a Java driver page.onResourceRequested = function(requestDat…… -
Java – why does the dropwizard configuration not work?
Recently, I changed the dropwizard version of HVDF project from 0.6 2 to 0.8 2. Once I try to run the application, I g…… -
Can generic types be extended to multiple classes in Java?
I'm trying to write a method using generic parameters in Java. I want to limit it to one of three possible classes (fi…… -
Java – update multiple volatile and j.u.c.atomic variables atomically
In order to update two or more volatile variables atomically, do you need to protect them through lock with synchroniz…… -
java. security. Invalidalgorithmparameterexception: the parameter object is not ecparameterspec
We use WL 11g and jdk1.0 on Linux machines 7 update 121 We see the following error to another Weblogic machine during …… -
Does Java – PostgreSQL support rest API?
I wonder if PostgreSQL supports rest, or are there other ways to implement it? Solution Postgres does not support out …… -
Java – when do I create a getter method without “get” in its name?
The following questions have bothered me for a long time. I can't find any information about naming conventions There …… -
Java – how to use custom validation in Jersey
I want to implement verification in Jersey, so if I send a duplicate value of username or email that already exists in…… -
Update specific object items in array list Java
I want to ask a question, how do I update the records in the array list object: For example: List<User> userList…… -
Java – is there a functional difference between initializing singletons in the getInstance () method or instance variable definition
Are there any functional differences between the two methods of implementing singleton? public class MySingleton { …… -
Read stream from S3 using clojure / Java
I have a large file on S3. I hope to decode and parse it when downloading I happen to use clojure Amazon library, but …… -
Java – cannot convert an empty string value to an enumeration
I am looking for a convenient solution to filter out fields pointing to empty string values before / during deserializ…… -
Java – inheritance and ‘instanceof’ test results
I'm studying 'instanceof' Java, but I can't clearly understand 'instanceof'. I think the following answers are true an…… -
Java – Android textview text is truncated at the bottom
So I have two text views, one above the other, but when the second text view is filled, the cut is truncated at the bo…… -
Java – how to restrict method calls to specific methods
I have a special requirement. I need to ensure that only specific methods in one class are allowed to call public (non…… -
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.……