Java 归档 - Page 101 of 655

Java – is there a stateless version of JPA entitymanager?

Hibernate has a stateless version of its session: does JPA entitymanager have something similar? That is, an entityman……

Java

2020-08-27

Java Spring JPA FetchMode. Join does not use join

I use JPA to have a very complex model structure in spring When using spring data to query my database, I expect a que……

Java

2020-08-27

Java – NullPointerException in Avro reflectdatumwriter

I have a specific problem with Avro serialization of Java objects I have POJOs generated from the XSD schema, and then……

Java

2020-08-27

Creating dirty methods for threads in Java

I recently started to delve into multithreading in Java In the process of exploring things, I found that there are two……

Java

2020-08-27

Java – how to convert char [] to int?

I have a problem. I need to take an array of characters (only composed of numbers) and print its value as an integer p……

Java

2020-08-27

Java – different methods of passing parameters: String args [] or – D?

I've seen many Java use the - D option to pass some parameters The more familiar method is to pass the parameter with ……

Java

2020-08-27

Read file into array – Java

I'm practicing Java and watching the exercise online: But I'm in the situation I need Read the file again,and initiali……

Java

2020-08-26

Java – how to increase the loop by 10 instead of 1?

This is my current code: http://ideone.com/PfXNQc import java.util.Scanner; public class Temperature { public st……

Java

2020-08-26

Java – Apache reverse proxy for WSS protocol

My application uses sockjs and spring framework I have a reverse proxy on my server to redirect HTTPS requests to the ……

Java

2020-08-26

How to get special methods of classes in Java?

I have a class with some methods in Java, as shown below: public class Class1 { private String a; private Stri……

Java

2020-08-26

Java – spring oauth2 access token in HTTP header

I try to use authorization server to implement spring oauth2 settings in an application and resource server in a separ……

Java

2020-08-26

Java – couchbase: reads all documents from the bucket

Is there any way to read all the files from the bucket? It is an active bucket, and I also want to access newly create……

Java

2020-08-26

Java – compute Big-O complexity

I'll eventually give the program an input file similar to 60000 400 pixel images, so I'll try to think about how the c……

Java

2020-08-26

How do I automatically start rserve from Java?

I write Java applications in the IntelliJ ide The application uses the rserve package to connect to R and perform some……

Java

2020-08-26

Java – in which layer do I access the database in the MVC design

I have a question about database access in MVC applications Where should I put my database access logic? Should it be ……

Java

2020-08-26

Java – invoking methods from generic wildcard references

The following code is simplified to the basic point of the problem: public class GenericTest { private interface ……

Java

2020-08-26

Protected references in Java

See English answers > understanding Java's protected modifier 6 package pac; public class A { protected A a; ……

Java

2020-08-26

Java – singleton vs public static final variable

So I know that the singleton mode is implemented as follows: public class ClassName { private static ClassName ins……

Java

2020-08-26

How to use java to convert UNIX epoch columns to dates in Apache spark dataframe?

I have a JSON data file that contains an attribute [creationdate], which is a UNIX EPOC of "long" numeric type The Apa……

Java

2020-08-26

If Java returns NoSuchElementException

How to create an IF statement to check whether the function returns "NoSuchElementException"? Similar to what I have b……

Java

2020-08-26

Java regular expressions do not delete points

I am trying to delete "..." in the text and replace it with "." My code: System.out.println(TextHandler.class.toString……

Java

2020-08-26

Java – unable to connect to Oracle using spring boot and Hibernate

I have a spring boot application using Postgres (1.2) Today, I was trying to switch it to Oracle, but when I tried to ……

Java

2020-08-26

Java – check that the download manager has downloaded the file

How do I check if a file has been downloaded and run its installation? I have a code: public void downloadUpdate(Strin……

Java

2020-08-26

Special behavior of for loop in Java

Today, while reading boxing and automatic boxing, I came up with a scene and found that I was trapped in an infinite c……

Java

2020-08-26

JavaFX – set two ‘setonaction’ buttons to be the same

I get the EventHandler from another class. I want to set this EventHandler to the same button as other actionevents Is……

Java

2020-08-26

Are there any restrictions on log lines in Java – Travis build?

I can see our Travis CI build job until they record 10000 lines, and then the build seems to stop, no matter what stag……

Java

2020-08-26

Trying to get data from a web service in Java

[ [ { "title": "ginger","id": "38","product_id": "17","product_logo": "imagePath/Desert_0.jpg?itok=Uvm6nxp……

Java

2020-08-26

Using multiple array constructors in Java

There was a problem creating a constructor with multiple one-dimensional string arrays: class relation { String[] set……

Java

2020-08-26

Java uses “extend” and range resolution / point operators?

I have encountered this problem while reading some code, and I have no idea what it means I tried to use Google search……

Java

2020-08-26

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

2020-08-26

Java – serialization [replication] of lambda

See English answer > unable to deserialize lambda 2 I have two completely separate projects that contain a class It……

Java

2020-08-26

Java – write a program to round a number to the next multiple of 10 given the following conditions?

MyApproach I created two functions in the first function, and I calculated the sum of all four numbers In the second f……

Java

2020-08-26

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Java – is there a stateless version of JPA entitymanager?

Java Spring JPA FetchMode. Join does not use join

Java – NullPointerException in Avro reflectdatumwriter

Creating dirty methods for threads in Java

Java – how to convert char [] to int?

Java – different methods of passing parameters: String args [] or – D?

Read file into array – Java

Java – how to increase the loop by 10 instead of 1?

Java – Apache reverse proxy for WSS protocol

How to get special methods of classes in Java?

Java – spring oauth2 access token in HTTP header

Java – couchbase: reads all documents from the bucket

Java – compute Big-O complexity

How do I automatically start rserve from Java?

Java – in which layer do I access the database in the MVC design

Java – invoking methods from generic wildcard references

Protected references in Java

Java – singleton vs public static final variable

How to use java to convert UNIX epoch columns to dates in Apache spark dataframe?

If Java returns NoSuchElementException

Java regular expressions do not delete points

Java – unable to connect to Oracle using spring boot and Hibernate

Java – check that the download manager has downloaded the file

Special behavior of for loop in Java

JavaFX – set two ‘setonaction’ buttons to be the same

Are there any restrictions on log lines in Java – Travis build?

Trying to get data from a web service in Java

Using multiple array constructors in Java

Java uses “extend” and range resolution / point operators?

Serializing classes using byte arrays in Java

Java – serialization [replication] of lambda

Java – write a program to round a number to the next multiple of 10 given the following conditions?

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