Java 归档 - Page 107 of 655

Java – no suitable method for sort (int [], >) found

Algorithm problem: given a list of nonnegative integers, arrange them into the largest number For example, given [3,30……

Java

2020-08-26

Java – use Jackson to generate CSV without quotation marks

I'm using Jackson CSV to generate CSV files, but I want references everywhere I can't find any information on apidoc C……

Java

2020-08-26

Java – Android studio – change the default code style

I'm used to writing code in this way: private String blabla() { return "bla"; } However, Android studio has adjust……

Java

2020-08-26

Java heap memory usage fluctuates

Dear developer, I encountered heap memory usage problems in Java applications The application itself only accepts sock……

Java

2020-08-26

Get the first and last time (in milliseconds) using the Java 8 time API

I converted my time calculation from self implemented code to Java 8 time API I need from Java time. Year or Java time……

Java

2020-08-26

Java – hibernate / spring – rollback transaction in transaction

In view of this example code: public class MyServiceImpl implements MyService { @Transactional public void myT……

Java

2020-08-26

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

2020-08-26

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……

Java

2020-08-26

How to achieve proper layer separation in xpage (that is, talking to Java objects instead of domino views and domino documents)

I am trying to implement appropriate layer separation in my xpage project Ideally, I try to reach the point where XML ……

Java

2020-08-26

Java – how do I use null’s to sort a collection and then reverse the list?

So I'm using a list of dates, some of which are "" or null I used the answer how to handle nuts when using java collec……

Java

2020-08-26

Address mapping of Java cassnadra object freeze annotation > >,

I tried to insert data into Cassandra (2.1.9) create table user{ name text,addresses map<text,frozen<lis……

Java

2020-08-26

Java – valid anagrams code – one of 32 cases failed Through 31 cases

I tried to write a little code for the puzzle, and then I wrote onw String s = "anagram"; String t = "nagara"; Map<……

Java

2020-08-26

Java – what’s the difference between Hudson and Jenkins?

How to choose between Hudson and Jenkins? [closed] 8 Please advise me which is most suitable for Java CI construction ……

Java

2020-08-26

Java – spring MVC hibernate encoding / multi line SQL import

I'm studying spring MVC, When the project starts, I have set up the database to import the default SQL and use hiberna……

Java

2020-08-26

Java – unable to parse com parse. ParseQueryAdapter

My current settings: >Operating system: Windows 7 > ide: Android studio (with updated SDK) > parse jar (V 1.1……

Java

2020-08-26

Java – hibernate – OGM [persistenceunit: person] cannot build hibernate sessionfactory

I received the following error Utilty. java public class Utility { private static EntityManagerFactory entityManag……

Java

2020-08-26

Unexpected negative number in Java

import java.util.*; import java.util.*; public class Prac9FibonacciNumbers { public static void main(String[] arg……

Java

2020-08-26

RX Java – cancel observable in rxjava

I have an observable object that is performing a download However, when I click the button, I want to cancel the obser……

Java

2020-08-26

Multithreading – parallel execution of computationally expensive mappings

I'm new to the reactivex Library (I use its Scala variant, RX Scala) I have an observable that sends values at a high ……

Java

2020-08-26

Symfony – @ uniqueconstraint and @ column (unique = true) options differ at the doctrine ORM level

At the database level, there is no difference in defining uniqueness with one option instead of another, as shown belo……

Java

2020-08-26

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

2020-08-26

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

2020-08-26

Java – inheritance aware class for mapping to replace the ‘instanceof’ series

I'm looking for some magical class map utilities that give a type and return the value associated with that type or it……

Java

2020-08-26

Java – what’s the difference between creating objects in these two ways?

I want to know the difference between these: 1-) JFrame frame = new JFrame(); JLabel label = new JLabel("example"); fr……

Java

2020-08-26

Java – the difference between defining variables inside and outside a loop

In terms of style or performance, is it better to define variables inside or outside the loop? For example: int var; f……

Java

2020-08-26

Java – moves characters in a string to the left

I'm a novice at stack overflow. I have a lab problem with a programming class that has been avoiding me The problem re……

Java

2020-08-26

Set the timestamp to the current time in Java

I'm trying to set the current date and time in the Java ee7 web application to my Apache Derby database I use time sta……

Java

2020-08-26

Java imageio grayscale PNG problem

I have a grayscale image (actually "Lena") and I want to try it out I regard it as 512 × 512 PNG files, 216 kinds of g……

Java

2020-08-26

CPU – what is a clock interrupt?

I can't find the correct definition of this on the Internet >Does every clock tick happen? > Does it happen ever……

Java

2020-08-26

Java – use the stringtokenizer to return the rest of the string

After watching it for more than an hour, I can't seem to find a way to achieve this If I do StringTokenizer sTokenizer……

Java

2020-08-26

Java hashtable non constant time operation

I am currently learning the hash table in Java. I have questions about the operation and performance speed of the hash……

Java

2020-08-26

Java – is webdriver a class or an interface?

Starting with selenium docs, webdriver is an interface, but in eclipse, org openqa. Selenium packages are displayed in……

Java

2020-08-26

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Java – no suitable method for sort (int [], >) found

Java – use Jackson to generate CSV without quotation marks

Java – Android studio – change the default code style

Java heap memory usage fluctuates

Get the first and last time (in milliseconds) using the Java 8 time API

Java – hibernate / spring – rollback transaction in transaction

Java – the symbol ‘asynctask’ cannot be resolved in Android studio

Java – if you reopen the application, SharedPreferences is not saved

How to achieve proper layer separation in xpage (that is, talking to Java objects instead of domino views and domino documents)

Java – how do I use null’s to sort a collection and then reverse the list?

Address mapping of Java cassnadra object freeze annotation > >,

Java – valid anagrams code – one of 32 cases failed Through 31 cases

Java – what’s the difference between Hudson and Jenkins?

Java – spring MVC hibernate encoding / multi line SQL import

Java – unable to parse com parse. ParseQueryAdapter

Java – hibernate – OGM [persistenceunit: person] cannot build hibernate sessionfactory

Unexpected negative number in Java

RX Java – cancel observable in rxjava

Multithreading – parallel execution of computationally expensive mappings

Symfony – @ uniqueconstraint and @ column (unique = true) options differ at the doctrine ORM level

Java – how to link an object to a thread so that wait() and notify() work

Java – neo4j connection string

Java – inheritance aware class for mapping to replace the ‘instanceof’ series

Java – what’s the difference between creating objects in these two ways?

Java – the difference between defining variables inside and outside a loop

Java – moves characters in a string to the left

Set the timestamp to the current time in Java

Java imageio grayscale PNG problem

CPU – what is a clock interrupt?

Java – use the stringtokenizer to return the rest of the string

Java hashtable non constant time operation

Java – is webdriver a class or an interface?

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