Recent questions tagged JAVA

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java - PatternSyntaxException while trying to split by },{

I am trying to break up an array I got through an API on a site, which Java has retrieved as a String. ... the proper way to escape this string? See Question&Answers more detail:os...

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

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java - Can an Android Service have multiple Permissions?

I have a service which both downloads a file and saves it, and it seems I can only specify one permission. < ... > </service> I need both. See Question&Answers more detail:os...

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

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java - javac cannot be run, and furthermore does not seem installed

I have a problem involving setting up Java. I have installed the JRE, added its path to PATH, and set JAVA_HOME ... folder. How do I run javac? See Question&Answers more detail:os...

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

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java - String is not equal to string?

String[] letters = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "L"}; Scanner inp = new ... yeah! never happens if I input one of A-L letters? See Question&Answers more detail:os...

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

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158 views

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java - Using request.getSession() as a locking object?

I have some java code that gets and sets a session attribute: Object obj = session.getAttribute(TEST_ATTR); if ... .setAttribute(obj); } } See Question&Answers more detail:os...

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

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355 views

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java - Convert a 2D array into a 1D array

Here is the code I have so far: public static int mode(int[][] arr) { ArrayList<Integer> list = new ... that background is of any importance. See Question&Answers more detail:os...

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

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276 views

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java - Spring MVC - How to check that no unexpected query string parameters has been passed?

I have a web service written in Spring MVC. It can be used by 3rd party developers. Our methods have ... annotation)? Many thanks Maxim See Question&Answers more detail:os...

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

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494 views

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java - utf8 charset with Thymeleaf

When using Spring with Thymeleaf all my Cyrillic characters are shown as ????? on pages. Using @RequestMapping( ... How to solve this issue? See Question&Answers more detail:os...

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

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610 views

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java - How to run testng.xml from Maven command line

I have the following entry in my pom.xml with the suite file defined in the configuration. <plugin> < ... clean test -DsuiteXmlFile=testng.xml See Question&Answers more detail:os...

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

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291 views

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java - Get bytecode from loaded class

Suppose in my JVM I have a loaded class Class<C> myClass. Is there a reliable way to ask the JVM for ... a custom classloader to load them there See Question&Answers more detail:os...

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

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288 views

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java - Does the Class-Path in the MANIFEST.MF can only include jar Files?

I want to include class files in other directories, not the directory of the main class. If I put these ... classes into a jar File? See Question&Answers more detail:os...

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

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582 views

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java - Tomcat Error: WARNING: Failed to retrieve JNDI naming context for container

I am encountering the following error within the catalina.2013-12-31.log file on the Tomcat70/logs/ folder ... -name> <url-pattern>/servlet/DestinationCustomerRefresh</url-pattern>...

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

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379 views

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java - Android: OutOfMemory error and the backstack

the following sheet represents the working flow in the application this question is about. I ran into problems with ... OoM? thanks in advance! See Question&Answers more detail:os...

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

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607 views

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java - GSON: Expected BEGIN_OBJECT but was STRING

I am getting a GSON error trying to unmarshal JSON into an object. The error (Expected BEGIN_OBJECT but was STRING at ... -code": "01955" } } See Question&Answers more detail:os...

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

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161 views

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java - Random class acting odd?

In this code: Random random = new Random(441287210); for(int i=0;i<10;i++) System.out.print(random ... random. Can someone please explain? See Question&Answers more detail:os...

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

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536 views

1 answer

java - Spring Data @CreatedDate annotation doesn't work for me

I am working on project where I use Spring Data. I wanted to fill in creationTime field using @CreatedDate ... "entityManagerFactory"/> </bean> See Question&Answers more detail:os...

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

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571 views

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java - Cannot inherit from final class error

What does this error mean .. It runs fine in Eclipse but not in intellij idea Exception in thread "main" java. ... .1.6.jar from Intellij IDea. See Question&Answers more detail:os...

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

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267 views

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java - Regular expression: who's greedier?

My primary concern is with the Java flavor, but I'd also appreciate information regarding others. Let's say you have ... prints "<Oh><><MyGod>" See Question&Answers more detail:os...

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

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119 views

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java - Register a Stream "completion" hook

Using the Java 8 Stream API, I would like to register a "completion hook", along the lines of: Stream<String> ... this with existing JDK 8 API? See Question&Answers more detail:os...

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

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276 views

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java - Ignore specific nodes/attributes while comparing two JSONs

I want to compare two JSON strings which is a huge hierarchy and want to know where they differ in values. ... other ways are also welcome. See Question&Answers more detail:os...

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

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656 views

1 answer

java - Type safety: Unchecked cast from Object to ArrayList<MyVariable>

Here is a part of a program that sends an ArrayList from a server to a client. I want to remove the warning about ... ")". ;) Thank you, Luis See Question&Answers more detail:os...

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

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172 views

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java - String and Final

What is difference between in the following statements String name = "Tiger"; final String name ="Tiger"; ... "CONSTANT" variable as final? See Question&Answers more detail:os...

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

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340 views

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java - How can I in a jsp page get maven project version number?

I am working on a java web application, managed by maven2. From time to time, we did some changes, and want to ... work. any ideas? Thank you. See Question&Answers more detail:os...

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

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289 views

1 answer

java - Log4J: How do I redirect an OutputStream or Writer to logger's writer(s)?

I have a method which runs asynchronously after start, using OutputStream or Writer as parameter. It acts as a ... , I was using before. See Question&Answers more detail:os...

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

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219 views

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java - Error:No such property: GradleVersion for class: JetGradlePlugin

I am getting below error in intellij for a gradle project. I am importing existing gradle project and ... class: JetGradlePlugin Please advise. See Question&Answers more detail:os...

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

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375 views

1 answer

java - Initializing a class with Class.forName() and which have a constructor which takes arguments

I am instantiating a class like this. myObj = (myObj) Class.forName("fully qualified class name here"). ... above one. Thanks, Narendra See Question&Answers more detail:os...

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

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772 views

1 answer

java - Mockito isA(Class<T> clazz) How to resolve type safety?

in my test I have the following line: when(client.runTask(anyString(), anyString(), isA(Iterable.class)). ... do not work. Any suggestions? See Question&Answers more detail:os...

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

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527 views

1 answer

java - How to fix "The code of method .. is exceeding the 65535 bytes limit"?

I have the following code: public static void main(String[] args) { try { String[] studentnames = { /* ... ) is exceeding the 65535 bytes limit See Question&Answers more detail:os...

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

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