Recent questions tagged java

0 votes

133 views

1 answer

How can I cast a Java object into a boolean primitive I tried like below but it doesn't work boolean di ... (Object) is undefined Please advise. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

249 views

1 answer

java - How do I center a JDialog on screen?

How do I go about positioning a JDialog at the center of the screen? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

144 views

1 answer

java - How to get resources directory path programmatically

I have the following directory layout: src main java resources sql (scripts for database) spring (configuration) ... point at resources/sql? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

265 views

1 answer

java - Is StringUtils.EMPTY recommended?

Do you use StringUtils.EMPTY instead of ""? I mean either as a return value or if you set a the value ... there we use StringUtils.isEmpty() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

745 views

1 answer

java - Gradle - Error Could not find method implementation() for arguments [com.android.support:appcompat-v7:26.0.0]

I am trying to open existing android project in android studio and it gradle cannot build the app without the error ... help to solve the issue See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

309 views

1 answer

java - Is there a javadoc tag for documenting generic type parameters?

I've been looking through the javadoc documentation on Sun's site, trying to find if there's a javadoc tag which ... . Can someone put me right? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

330 views

1 answer

java - Android audio capture silence detection

I found this android code to record the user sound when he/she starts to speak and stop recording when he/she stops. ... // */ tempIndex++; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

109 views

1 answer

java - Run Spring4MVC with Angular 2 on a single server

I am new to angular2, I want to know what is the possible file structure for SpringMVC4 with angular 2? ... . Answers will be appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

160 views

1 answer

java - Getting localized message from resourceBundle via annotations in Spring Framework

Is it possible to do this ? Currently it is done like this : <bean id="resource" class="org.springframework ... , this would be really helpful See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

228 views

1 answer

java - HTTP POST request with authorization on android

When I set "Authorization" header with setHeader from HttpPost then hostname disappears from request and there is ... it is no difference. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

168 views

1 answer

java - Automating unit tests (junit) for Eclipse Plugin development

I am developing Eclipse plugins, and I need to be able to automate the building and execution of the test ... core.runtime.compatibility_0.0.0. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

165 views

1 answer

java - Mutual authentication with Tomcat 7

I'm trying to set up a Java web service running in Tomcat 7 to use mutual (2-way) authentication. It ... unsupported cipher suite: <suite name> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

190 views

1 answer

java - Find all substrings that are palindromes

If the input is 'abba' then the possible palindromes are a, b, b, a, bb, abba. I understand ... efficient way of finding palindrome substrings? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

502 views

1 answer

java - Fastest way to iterate through large table using JDBC

I'm trying to create a java program to cleanup and merge rows in my table. The table is large, about 500k ... . Is there a faster alternative? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

456 views

1 answer

java - JaCoCo with Maven - missing execution data file

We have a Maven multi module project consisting of a parent (HelloWorld) and different children (HelloWorldServices ... the INFO message. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

420 views

1 answer

java - How to add calendar events to default calendar, silently without Intent, in android 4?

I want to add calendar events programmatically (directly) in android 4+. Is it this possible to be tested on ... default calendar of the user? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

327 views

1 answer

java - How can I prevent PermGen space errors in Netbeans?

Every 15-30 minutes Netbeans shows a "java.lang.OutOfMemoryError: PermGen space". From what I learned from Google ... can I find the source? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

243 views

1 answer

java - The difference between InputStream and InputStreamReader when reading multi-byte characters

The difference between InputStream and InputStreamReader is that InputStream reads as byte, while InputStreamReader reads as ... as two bytes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

199 views

1 answer

java - PBKDF2WithHmacSHA512 Vs. PBKDF2WithHmacSHA1

I'm working on a Java authentication subsystem that specs the storage of passwords in the DB as PBKDF2-generated hashes, ... DB as CHAR(64)... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

215 views

1 answer

java - Spring-security context setup for 2-legged (client credentials) OAuth2 server

What's the minimal setup for spring-security OAuth2 if I want to secure a REST server for one client? I don't want to ... /servlet-context.xml </param-value> </init-param> <load-on...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

558 views

1 answer

java - Is it possible to limit the size of a @OneToMany collection with Hibernate or JPA Annotations?

If I have the following mapped collection in a POJO using JPA/Hibernate Annotations: @OneToMany(mappedBy = " ... the supported dialects). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

328 views

1 answer

java - Bold black cursor in Eclipse deletes code, and I don't know how to get rid of it

When I edit code in the middle of statements, it replaces the current code around it. I cannot find ... that functionality possible in Eclipse? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

243 views

1 answer

java - Android Asyntask: Use weak reference for context to avoid device rotate screen

In Apress Pro Android 4 the author has said that: [...] context of currently running activity will no longer ... please give me an example. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

java - Spring, JPA, and Hibernate - how to increment a counter without concurrency issues

I'm playing around a bit with Spring and JPA/Hibernate and I'm a bit confused on the right way to increment ... annotation is not doing is work? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

184 views

1 answer

java - Is the onUpgrade method ever called?

Is the onUpgrade method of SQLiteOpenHelper ever called? If so, when is it called and by what? If it is not ... you should do. Any suggestions? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

122 views

1 answer

java - Is Constructor Overriding Possible?

What i know is, the compiler writes a default no argument constructor in the byte code. But if we ... this phenomena a constructor overriding? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

245 views

1 answer

java - How to return a html page from a restful controller in spring boot?

I want to return a simple html page from controller, but I get only the name of the file not its content. ... This is my project structure: [ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

583 views

1 answer

java - How to convert Byte array to PrivateKey or PublicKey type?

I am using RSA algorithm to generate public and private key final KeyPairGenerator keyGen = KeyPairGenerator.getInstance( ... private key type? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Just Browsing Browsing

Most popular tags