Recent questions tagged JAVA

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java - Is it possible to use multiple ehcache.xml (in different projects, same war)?

I have a services project and a web project. I need to have eh-cache in both projects. The idea is that if ... Am I wrong, or missing something? 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 - Convert integer value to string using JSTL/EL

How do I correct this statement: ${model.myHashtable[model.data.id]}. myHashtable is defined as Hashtable<String, ... type of id to 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 - Why do we have contains(Object o) instead of contains(E e)?

Is it to maintain backwards compatibility with older (un-genericized) versions of Collection? Or is there a more subtle ... as add(E e). 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 - Invalid escape sequence (valid ones are f " ' \ )

I am trying to read a file into my Java program using java.util.Scanner and I get the above message when I ... ("My DocumentsJOBS ewfile.txt")); 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 - Why is the semicolon not required but allowed at the end of a class definition?

I'm trying to shift from C++ to Java. What I wonder is, in C++, after a class definition, a ... other related questions. 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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java - Why does List.add(E) return boolean while List.Add(int, E) returns void?

Looking at the javadoc I saw the that an ArrayList has an overloaded add method: public boolean add(E e) ... instead of the void approach? 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 - How to change JavaMail port

I'm writing a small Java app using JavaMail that sends the user an automated email. They can choose between (for ... ); Transport.send(msg); } 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 - How do I set a property on a mocked object using Mockito?

I have a scenario where I have to set a property of a mocked object as follows: SlingHttpRequest slingHttpRequest= ... do I set this property? 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 - Separating Unicode ligature characters

Throughout the vast number of unicode characters, there are some that actually represent more than one character, like ... library if need be. 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 - What is best way to schedule task in spring boot application

I am current developing an application based on Spring-Boot. I know that annotation like @Scheduled can schedule ... there any better ways? See Question&Answers more detail:os...

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

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477 views

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java - Using hibernate named parameter twice

Assumed i have the following HQL EntityManager.createQuery("SELECT a FROM a WHERE a.b = :par OR a.c = ... remain using only one parameter? 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 - Which debugging tool can list strings internalized?

I am looking to a debugging tool that can list the strings that have been internalized? Ideally, I would like ... that mark. 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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java - GWT - did you forget to inherit a required module?

In my GWT application, on the client side Java file, I have written a line to print the Locale: System.out. ... What am i doing wrong here? 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 - Thymeleaf: add parameter to current url

I'm at http://example.com/some/page?p1=11 and I want to add a parameter to current url without having to ... How can I do it using Thymeleaf? 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 - Unresolved reference in kotlin with id and activity_main

I'm actually creating a new app in kotlin to display an xml file in boxes with the informations formatted To problem ... is wrong in my code ? See Question&Answers more detail:os...

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

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387 views

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java - How do I auto-expand a JTree when setting a new TreeModel?

I have a custom JTree and a custom JModel; I would for the JTree to "auto-expand" when I give it a new ... the tree when setting a new model? 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 - Why is this usage of Stream::flatMap wrong?

I expected to be able to use Stream::flatMap like this public static List<String> duplicate(String s) { List< ... usage of flatMap in java? See Question&Answers more detail:os...

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

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436 views

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java - System.exit(num) or throw a RuntimeException from main?

I've got a single threaded app that should set the DOS errorlevel to something non-zero if there is a ... differences between these two options? See Question&Answers more detail:os...

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

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452 views

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java - Error "HTTP/1.1 401 Unauthorized" with basic authentication in android - EWS 2010

I refer to this link to request to the server. The problem is sometime (not always, about 20% - 30%, means sometime ... is my problem, isn't it? 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 - JSon schema and Inheritance

I have searched on json schema with java bindings with inheritance and all searches led me to the usage of " ... curious to know the reason. See Question&Answers more detail:os...

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

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699 views

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java - How to find sub-directories in a directory/folder?

I'm looking for a way to get all the names of directories in a given directory, but not files. For example, ... there a simple way to do this? 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 - Comparing Performance of int and Integer

Which one is best in programming - int or Integer? Especially whenever both are doing the same task? I am ... best for a Java application? See Question&Answers more detail:os...

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

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319 views

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java - Is there a way to get the javadoc tool to document annotations?

In my project, we use a number of annotations that would be very useful to see in the javadoc API ... there any solutions out 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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397 views

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java - Can't declare an abstract method private

I want to do this, yet I can't. Here is my scenario and rational. I have an abstract class for test ... = new CRMAppTestCase().performTest(); 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 - Enums: methods exclusive to each one of the instances

From another question I have learnt that it is possible in Java to define specific methods for each one of ... use these "exclusive" methods? 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

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java - How to get local time of different time zones?

I want to get local time of different time zones using Java code. Based on the time zone passed to the function ... time. How to achieve this? See Question&Answers more detail:os...

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

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336 views

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java - Align the values of the cells in JTable?

I'm not aware of how to align the values of cells in JTable. For Ex,The Jtable shows, Name Salary Mr.X ... How to align as above the JTable See Question&Answers more detail:os...

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

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680 views

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java - Escaping quotes in velocity template

I have a java method, that takes a few strings. This method needs to be called from a Velocity Template. ... way to escape quotes in Velocity? See Question&Answers more detail:os...

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

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