Recent questions tagged Java

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java - How to make the support Toolbar background transparent?

Is there a way to make the new Android support Toolbar: android.support.v7.widget.Toolbar Have a transparent ... 't. 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 - JavaFX 11 using Maven throws Exception: "WindowsNativeRunloopThread"

I have been testing JavaFX 11 using Maven and cannot get it to work. I have Open JDK 11 installed and if ... path. Any help much 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 - Extra Query parameters in the REST API Url

In my Rest application, the resource url also support query parameters like pageSize, pageNum , name etc. So ... . Thanks in Advance Singla 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 - Grizzly Standalone Logging

i have setup a standalone grizzly/jersey server using maven and referencing the following dependencies <dependency> <groupId> ... -and-error :-) 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 - RoundingMode.HALF_DOWN issue in Java8

I am using jdk 1.8.0_45, and our tests discovered a bug in rouding. RoundingMode.HALF_DOWN works the same as ... 10.5555 Round up 10.5556 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 - Thread-specific heap allocation

Is it possible to make some sub-set of threads (e.g. from specific ThreadPool) allocate memory from own heap? E ... , modify 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 - Hibernate - BigDecimal column mapping for Custom Dialect

I'm using Hibernate as our Object-Relational Mapping, with a custom dialect for an obscure database. The ... of the BigDecimal retrieved? 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 make DateFormat guess intended century?

I am trying to parse a String in "dd-MM-yy" format to a Date object. The problem is that it tries ... shifting the date based on the condition. 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 - Lob is closed. ERRORCODE=-4470, SQLSTATE=null

I am using IBM websphere commerce and db2, have following piece of code Clob clobVar = null; if (result. ... How to resolve 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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java - How can I fix this error : non supported SQL92?

I wirte code in java and database connection with oracle. I run some script and get this error.My script work in ... and How can I fix 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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277 views

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java - "Cannot find symbol" for my own class

I do not have a %CLASSPATH% set up. As I understand, this should not be a problem because ... :Documents and SettingsjoepMy DocumentsGCJsrc> 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 - Spring's @RequestBody providing empty string on POST

I have an application with Spring 3.0.5.RELEASE trying to get the full content of a post using @RequestBody. ... or help is more than welcomed! 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 - Cant start tomcat with spring boot on linux

Suddenly I cant start my embedded tomcat. I get: [main] ERROR o.a ... .boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory.getTomcatEmbeddedServletContainer(Tomcat...

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

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272 views

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java - read and write data with GSON

I am struggling to find a good example on how to read and write data in my android app using GSON. Could ... about saving that to a 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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361 views

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java - JScrollPane resize containing JPanel when scrollbars appear

I have a small problem when using JScrollPane in my Java application. I have a JScrollPane containing a JPanel. This JPanel is ... ; } } }); } } See Question&Answers more detail:os...

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

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429 views

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java - ajaxStatus for specific component only

I'm using Primefaces 3.2 with JSF 2.0. I'm using a <p:commandButton action="#{myBackingBean.action}" ... renders on every ajax event.. 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 - Logback, set max history files per day

I use TimeBasedRollingPolicy and SizeAndTimeBasedFNATP triggering policy for my logback configuration. The rollover of log ... with logback? 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 wrap a swing component in a javaFX 2.0 application

The ability to wrap a swing component in a javaFX application seems to have vanished from javaFX 2: javafx.ext.swing. ... this in the new 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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450 views

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java - Get the path of a directory using JFileChooser

How can I get the absolute path of a directory using JFileChooser, just selecting the directory? 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 - An Iterator which mutates and returns the same object. Bad practice?

I'm writing GC friendly code to read and return to the user a series of byte[] messages. Internally I reuse ... on Keith's answer to production. 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 - Clean up code in finalize() or finally()?

I had the general view that clean up of resources is done in the finally block, recently I found this ... of finalize() over finally? See Question&Answers more detail:os...

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

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595 views

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java - No CurrentSessionContext configured

sorry for bad English. I get my project started with spring-boot 1.1.8, Encountered Exception ... type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]...

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

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836 views

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java - getCssValue (Color) in Hex format in Selenium WebDriver

In the following code I need to print the color in Hex format. First Print statement is showing value in RGB format ... .out.println(hex); } } See Question&Answers more detail:os...

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

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665 views

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java - keytool -genkey runs in a loop to generate .keystore file

I invoked this on cmd: keytool -genpair -v - keystore myrelease.keystore -keyalg RSA - keysize 2048 -validity 1000 ... do I need to check? 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 - Vaadin - Refresh grid after row modification

I create simple grid with data from database: BeanItemContainer<Customer> container = new BeanItemContainer<>(Customer.class, ... could do 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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300 views

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java - What is the purpose of access modifiers?

I know this applies to many languages, and not just Java, but that is the language I'm most familiar with. I ... whether or not it needs to 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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360 views

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java - SimpleDateFormat Week Calculations

I'm getting some puzzling results with SimpleDateFormat and am hoping that someone can shed some light on ... and DateTime.getWeekOfWeekyear. See Question&Answers more detail:os...

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

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302 views

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java - Drawing a line on a JFrame

I am trying to draw a line using the Graphics 2D but then the line appears over all the other components in the ... ; s.setVisible(true); } } See Question&Answers more detail:os...

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

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