Recent questions tagged java

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java - oracle jdbc driver version madness

Why the heck does Oracle offer a different(!) version of the JDBC driver, e.g. ojdbc14.jar, for every(! ... was mistaken about the 9i databases. 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 Send bulk mails using javax.mail API efficiently? & Can we use reuse authenticated sessions to improve speed?

I am able to send a mail using javax.mail API. But the problem here is on an average for each mail ... on this is really appreciated. -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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java - How to get more than 255 columns in an excel sheet using Apache POI 3.6

I'm creating a calendar in excel. Column 1 is 01.01.2010 (dd.MM.yyyy), Column 2 is 02.01.2010 and so ... like the bug-issue was about formulas.. 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 - Placing random circles without overlap (and without using brute force)?

I've just submitted a Java assignment in which I needed to draw some circles randomly on the screen as part ... , using the standard library? 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 - Does the Bridge Pattern decouples an abstraction from implementation?

I learned Bridge pattern from different articles and I have implemented that as per my understanding . One ... help is greatly appreciated. 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 - Escape comma when using String.split

I'm trying to perform some super simple parsing o log files, so I'm using String.split method like this: String ... But, well, is not working. 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 - Looking for an expression evaluator

I'm looking for an evaluator for simple condition expressions. Expressions should include variables (read only), ... could i use instead? 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 - Implementing X509TrustManager - passing on part of the verification to existing verifier

I need to ignore the PKIX path building exception javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException ... I 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 - adb cannot connect to daemon at tcp:5037

My adb can't connect devices. I am runing adb start-server ulucudeMacBook-Pro:~ ulucu$ adb start-server * daemon ... .39. What's the problem? 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 get a reversed String (unicode safe)

Let us suppose we want to revert the following String "áe". The unicode for that is "u0061u0301u0065". The naive ... Is my aproach still naive? 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 - @AspectJ pointcut for methods that override an interface method with an annotation

How can I write an aspectj pointcut that applies to method executions which override an interface method with an annotation ... 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 - How to Implement SSO on existing tomcat web application

I have a tomcat 7 setup with oldApp.war and newApp.war deployed on it. Both the applications share the same ... handle this. 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 - Swing UIManager.getColor() keys

Is there a list somewhere of the UIManager.getColor() keys for Swing? I can't seem to find it ... background" and "Table.selectionBackground". 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 - Signer information does not match

I'm receiving the following error on log file. (java.lang.SecurityException: class "com.adventnet.snmp.snmp2. ... can this problem occur? 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 the use of Map.ofEntries() instead of Map.of()

From the documentation of Map.java - The Map.of() and Map.ofEntries() static factory methods provide a convenient ... not stored in the map. 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 8 - CompletableFuture in the Android Support Library?

So I was migrating an Android Studio project to Java 8, Android API level 24 and the Jack toolchain today ... solution for the Promises pattern. 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 read full response from HttpURLConnection?

I make some proxy server in andorid which modify http headers, it works ok, but I have to forward full ... some stream with whole reposne? 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 instantiation of static nested class object is allowed?

I have started learning Java language for Android Application developement. As per my understanding based ... EnclosingClass.StaticInnerClass() See Question&Answers more detail:os...

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

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132 views

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java - Android app video recording when screen off

What I am trying to do is that make an app that can record video or audio while the screen is off. Either ... . Please provide code of you can. 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 - Multithreading in JavaFX hangs the UI

I have a simple JavaFX 2 app, with 2 buttons, saying Start and Stop. When the start button is clicked, I want ... ) What am I doing wrong? See Question&Answers more detail:os...

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

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207 views

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java - Reference to method is ambiguous when using lambdas and generics

I am getting an error on the following code, which I believe should not be there... Using JDK 8u40 to compile this ... <T, ?> should not match. 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 - ant debugging in eclipse

I would like to know about the debugging capabilities of ANT using eclipse. Basically I have an ANT build ... tasks that are beings called. 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 - A new version of Eclipse just came out. Is there anything I can do to avoid having to manually hunt down my plugins again?

Galileo came out the other day, and even though plugins under Eclipse are, IMO, just a little bit easier to deal ... plugins with me). Any tips? See Question&Answers more detail:os...

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

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285 views

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java - JEE6 @ApplicationScoped bean and concurrency

I need to write a bean that would act as a counter of how many times it was accessed. I'm thinking of ... already takes care of thread safety? See Question&Answers more detail:os...

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

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468 views

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java - ImageView.getWidth() returns 0

I get imageView's width 0. Below is code. xml file : <ImageView android:id="@+id/img" android:layout_width= ... now does not have this problem. See Question&Answers more detail:os...

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

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236 views

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java - DataSource or ConnectionPoolDataSource for Application Server JDBC resources

When creating JNDI JDBC connection pools in an application server, I always specified the type as javax.sql. ... (or vice versa)? 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 - How to generate swagger.json using gradle?

I want to use swagger-codegen to generate REST clients and possibly static HTML documentation. However, swagger-codegen ... a browser to 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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661 views

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java - How to redirect URLs with trailing slash to the corresponding ones without it?

Spring MVC (3.0) considers URLs with and without trailing slashes as the same URL. For example: http://www ... the relative one without slash? See Question&Answers more detail:os...

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

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