Recent questions tagged java

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java - Specifying whether or not to lazily load with Spring Data

I have a lazy fetch type collection in an entity. And I am using Spring Data (JpaRepository) for accessing ... com.entity.Parent["children"]) 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 - Accessing JSF session scoped bean from servlet which is called by applet embedded in JSF webapp

I need to access a session scoped bean from a servlet. I already tried UserBean userBean = (UserBean) request. ... to the jsf managed bean. 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 - Creating a SWT.MOZILLA browser on Windows 64 bit and SWT 4.3

I'm trying to create an SWT Browser widget of the SWT.MOZILLA type under windows 8 64Bit with SWT 4.3 64Bit. ... embeddable in my swt 4.3 app? 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 - Copy STDOUT to file without stopping it showing onscreen

The program I am making is designed to be run unattended, because of this I have redirected the stdout and ... System.setOut(logWriter); Thanks. 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 - Constructor cannot be applied to given types?

I have the following Java code: public class WeirdList { /** The empty sequence of integers. */ /*ERROR LINE ... against the wall for an hour. 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 - What is the regular expression to remove whitespace inside brackets?

I am writing a program in Java to accept queries. If I have a query like insert into abc values ( ... remove whitespace within brackets only. 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 set text an integer and get int without getting error

I tried to get the intent from integer. The String get intent works fine and displays well but when i ... text1.setText(productCalories); } } 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 connect to a 32-bit Access Database from 64-bit JVM?

So far, when I had to connect to an 32-bit Access Database, I simply executed the application using 32-bit ... getConnection(s, user, password); 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 - Initialize variable with constructor

I have two class, first is my main class, and second class in my edit frame class. public class RecordTableGUI ... print rrr instead of null. 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 capturing volume up/down key presses in broadcast receiver?

I'm trying to make an application where the user can override the default behaviour of the volume up/down buttons ... . Thanks for any help. 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 - Issue with OAuth2 authentication with google spreadsheet

I am using java library for oauth2 authentication for accessing google spreadsheet. I am using below code for OAuth2 ... a valid access token. 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 - Expected BEGIN_ARRAY but was BEGIN_OBJECT retrofit2

I have some problem about retrofit2 How to fix Expected BEGIN_ARRAY but was BEGIN_OBJECT in retrofit2 I don't know ... what's problem ? thanks! 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 use a Spring bean inside an OSGi bundle?

I have an application where I have to use Spring to load a bean based on some business conditions inside an OSGi ... there any way to do 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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java - Understanding if data exists in Firebase

I am using the following to fetch a username from Firebase. But in this case, how do I get to know, if ... ("username").equalTo("username"); 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 - Building JPA Criteria API query - sorting by number of elements in collection

I am having problem with building a query with JPA Criteria API. Entities and significant properties: @Entity public ... comments field(set)? 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 three-letter short timezone name (as opposed to four-letter)?

I've written an Android app that needs the short timezone name in which the handset is currently located. ... four-letter short timezone names. 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 - Load Native Library from Class path

I have a project setup that follows the Standard Directory Layout (not using Maven though): src/main | java | ... Class-Path in the Manifest? 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 JComboBox ignore PrototypeDisplayValue

In connections with these two post @iMohammad, Increasing/Decreasing Font Size inside textArea using JButton and Changing Font ... } }); } } 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 - Errors occur when calling print(List<T> a, T b) with different T class

I am trying to learn Java Generics, and found the following code. public static <T> void print(T a, T ... anyone help me understand the 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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java - How can my ActionListener for a JButton access variables in another class?

I am doing a slot machine for a project. I am having trouble getting my JButton to generate new random ... ",JOptionPane.YES_NO_OPTION); } } 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 - NoSuchMethodError:registerAutoProxyCreatorIfNecessary(ParserContext;Object;) exception with Spring config

I have a little problem with my spring project. I have this configuration: applicationContext.xml <?xml version=" ... -security-config</artifactId> <version>${spring.security.ve...

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

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java - SMS missing from content provider results on Android Marshmallow

Some text messages are missing and never show in the content://sms provider URI since the Samsung S7 came out. I ... in Android) would they be? 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 - Just getting id column value not using join in hibernate object one to many relation

I'm using hibernate 4+. I have two sample tables. Table A public class A { @Id private int id; @OneToMany(fetch ... id(fk) value? please help. 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 - JSTL c:choose c:when not working in a JSF page

Consider the following jstl choose: <c:choose> <c:when test="#{AuthMsgBean.rw['2'] ne null}"> Display Text </ ... If so, is there a workaround? 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 do I need to use finally to close resources?

Most of the time, the only thing I see a finally block used for is something like FileInputStream f; try{ f= ... to close it in the finally? See Question&Answers more detail:os...

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

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421 views

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java - Get a list of combinations of lists' elements

Suppose I have 3 lists: ['q','w'], ['a','s'], ['z','x']. How to get a list of possible ... that this is done by Guava's Sets.cartesianProduct. 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 - Catch KeyCode in AjaxBehaviorEvent of JSF 2

I have a JSF ajax keyup event linked to an event listner in a backing bean. The code in the JSF file is ... this is done in the backing bean? 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 - Running Eclipse on Windows 7 JRE and JDK not found

I downloaded the latest Eclipse on Windows 7. When I click the eclipse icon it throws the following ... :Program Files (x86)Javajre7in See Question&Answers more detail:os...

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

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