Recent questions tagged java

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java - How to disable spring-security login screen?

I'm using spring-boot-starter-security dependency, to make use of several classes that come with spring- ... of spring security features? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Get the table name from the model in Hibernate

How do I get the table name for a model in Hibernate? Apparently there used to be a getTableName() method in ... ) for the sake of reference. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Android close dialog after 5 seconds?

I'm working on an accesibility app. When the user wants to leave the app I show a dialog where he has to ... dialog 5 seconds after showing it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - External Iterator vs Internal Iterator

What is an external and internal iterator in Java ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to disable spring-data-mongodb autoconfiguration in spring-boot

Has anyone tried disabling autoconfiguration for mongodb in spring-boot? I am trying out spring-boot ... 2: mongoDbFactory2,mongoDbFactory1 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Atomically incrementing counters stored in ConcurrentHashMap

I would like to collect some metrics from various places in a web app. To keep it simple, all these will be ... same topic. See slides 24-33. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do I make log4j clear a log at startup?

I want the log to roll over as long as the application is running, but I want the log to start fresh when ... it leaves the rolled files alone. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Create jre from OpenJDK Windows

We are switching from Oracle JDK/JRE to OpenJDK. Now I found only the JDK but I want to have a JRE as ... from the OpenJDK for Windows X64? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to mock static method without powermock

Is there any way we can mock the static util method while testing in JUnit? I know Powermock can mock ... . Are there any alternatives? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven Error: Could not find or load main class

I'm using a Java Maven program and I don't know what to enter as the <mainClass>. I've tried all kinds of ... build> How do I fix these errors? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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330 views

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java - How do I get the original text that an antlr4 rule matched?

Using the Java 7 grammar https://github.com/antlr/grammars-v4/blob/master/java7/Java7.g4 I want to ... the comments and original formatting. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Executing JUnit 4 and JUnit 5 tests in a same build

In Maven projects, I have some existing tests relying on JUnit 4. I cannot migrate these tests in JUnit 5 for ... features. How to do that ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why can't I have 'int' as the type of an ArrayList?

I want to declare an ArrayList of type int. Why does the following give me an error: ArrayList<int> list1 = ... = new ArrayList<Integer>(); ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Converting input stream into bitmap

I have problems converting a input stream from web into bitmap. Problem occurs only when input ... .decodeStream(bufferedInputStream); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Converting Relative Paths to Absolute Paths

I have an absolute path to file A. I have a relative path to file B from file A's directory. This path ... possible absolute path to file B? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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189 views

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java - Why does QuickSort use O(log(n)) extra space?

I have implemented the below quicksort algorithm. Online I've read that it has a space requirement of O(log(n)). Why ... --; } } return left; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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207 views

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java - JavaFX TableView text alignment

As you can see on the picture the text alignment for each colum is set to left alignment. Is there any ... can change the alignment to right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to get request URL in Spring Boot RestController

I am trying to get the request URL in a RestController. The RestController has multiple methods annotated with ... return test; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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158 views

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java - debug JSP from eclipse

Does anyone know of a good tool for debugging JSPs from within Eclipse? I'd like to be able to set and ... but it's also fairly unappealing. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Data truncation: Data too long for column 'logo' at row 1

I am trying to insert a photo into a BLOB column of a MySQL table, and I get an exception: Data too long for ... } How do I solve this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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173 views

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java - Immutable @ConfigurationProperties

Is it possible to have immutable (final) fields with Spring Boot's @ConfigurationProperties annotation? Example below ... each non-final field. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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java - How can I serve static html from spring boot?

I ran the spring-boot-sample-web-static project from here, made this alteration to the pom <dependency> <groupId ... Am I doing something wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - unable to marshal type as an element because it is missing an @XmlRootElement annotation for auto generated classes

I need to validate Class object against my schema in which I have provided regular expression to validate fields for ... way I can solve this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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383 views

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java - What's the location of the JavaFX runtime JAR file, jfxrt.jar, on Linux?

I'm trying to run some JavaFX code with Eclipse Kepler, with e(fx)clipse plugin installed, on a Linux machine, ... else should I look for it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to check if android checkbox is checked within its onClick method (declared in XML)?

I have a checkbox in android which has the following XML: <CheckBox android:id="@+id/item_check" android: ... declaring onClick method via XML? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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java - toString(), equals(), and hashCode() in an interface

So, I have an interface with a bunch of methods that need to be implemented, the method names are irrelevant. ... three. What gives? Any clues? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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285 views

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java - Why was "new Date(int year, int month, int day)" deprecated?

My application I've recently inherited is FULL of deprecation warnings about the constructor: Date d = new Date( ... 50% more time to execute. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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116 views

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java - How can I check if a value is of type Integer?

I need to check if a value is an integer. I found this: How to check whether input value is integer or ... value itself is indeed an integer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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