什么是StackOverflowError ，是什么原因造成的，我该如何处理它们？ Parameters and local variables are allocated on the stack (with reference types the object lives on the heap and a variable references that object). The stack typically lives at the upper end of your address space and as it is used up it heads towards the bottom of the address space (ie towards zero). Your process also has a heap,
什么是StackOverflowError ，是什么原因造成的，我该如何处理它们？ 参数和局部变量分配在堆栈上（对象在堆上引用类型，变量引用该对象）。 堆栈通常位于地址空间的上端，当它用完时它将朝向地址空间的底部（即趋近于零）。 你的过程也有一堆，它存在于你的过程的底端。 当你分配内存时，这个堆可以增长到你的地址空间的高端。 正如你所看到的，堆有可能与栈“碰撞”（有点像构造板!!!）。 堆栈溢出的常见原因是递归调用不
I am facing a problem where I have to modify a package-info. package-info.java @javax.xml.bind.annotation.XmlSchema(namespace = "http://some.url/soap/style/document_literal") package org.example.wsdl.wsdl; The following code works fine with 1.7.0_45. // do not load any classes before, this could break the following code. Class<?> pkgInfo = Class.forName("org.exampl
我面临一个问题，我必须修改包信息。 package-info.java @javax.xml.bind.annotation.XmlSchema(namespace = "http://some.url/soap/style/document_literal") package org.example.wsdl.wsdl; 以下代码在1.7.0_45下正常工作。 // do not load any classes before, this could break the following code. Class<?> pkgInfo = Class.forName("org.example.wsdl.package-info", true, NameSpaceMod
I have been facing an issue while compiling with -cp or the -classpath flag in Java. I will try to explain the problem below: Let's say; I have two files - A.java and B.java. A.java has a simple public class with a private instance variable, one get and one set method. B.java is the driver method for A. It instantiates A; sets some value for A's instance variable and finally prints
在Java中使用-cp或-classpath标志进行编译时，我一直面临一个问题。 我会尝试解释下面的问题： 假设; 我有两个文件 - A.java和B.java。 A.java有一个简单的公共类，包含一个私有实例变量，一个get和一个set方法。 B.java是A的驱动程序方法。它实例化A; 为A的实例变量设置一些值，最后使用A中的get方法打印出该值。 我可以从命令行编译A.java和B.java。 如果两个编译的类文件都在同一个文件夹中; 以下运行良好： jav
I asked this question to get to know how to increase the runtime call stack size in the JVM. I've got an answer to this, and I've also got many useful answers and comments relevant to how Java handles the situation where a large runtime stack is needed. I've extended my question with the summary of the responses. Originally I wanted to increase the JVM stack size so programs like
我问了这个问题，以了解如何增加JVM中的运行时调用堆栈大小。 我已经得到了一个答案，并且我还得到了许多有用的答案和评论，这些答案和评论与Java如何处理需要大型运行时堆栈的情况相关。 我已经回答了问题的总结。 最初我想增加JVM堆栈大小，以便程序运行时不会出现StackOverflowError 。 public class TT { public static long fact(int n) { return n < 2 ? 1 : n * fact(n - 1); } public static void main
Cannot allocate heap on one of two identical systems with the same version of java. If I set the stack size limit (ulimit -s) higher on the failing system it then works. 'strace' shows that java is failing on the second system in mmap2(). I need to explain to a QA/developer that I'm supporting why this is so. Any suggestions why they are acting different?: [root@sys2 tmp]# /usr/l
无法在具有相同版本的Java的两个相同系统之一上分配堆。 如果我在发生故障的系统上将堆栈大小限制（ulimit -s）设置得更高，它就会起作用。 'strace'表明Java在mmap2（）中的第二个系统上失败。 我需要向QA /开发人员解释我支持为何如此。 任何建议他们为什么表现不同？： [root@sys2 tmp]# /usr/lib/jvm/java-1.6.0-openjdk/bin/java -server -Xms1303m -Xmx1303m -XX:MaxPermSize=256m -Djava.net.preferIPv4Stack
I am having an issue with the Direct Web Remoting Javascript library in Safari browser (both Desktop and iPad) OR rather all webkit-based browsers.. The error is in the auto-generated engine.js file and is related to "Maximum call stack size exceeded error" Is anyone aware if this is a known issue and if yes, what is the solution for the same. The DWR version seems to be 2.0 Refer
我在Safari浏览器（包括Desktop和iPad）或者所有基于Webkit的浏览器中遇到Direct Web Remoting Javascript库的问题。 错误在自动生成的engine.js文件中，并且与“最大调用堆栈大小超出错误”相关。是否有人知道这是否是已知问题，如果是，则相同的解决方案是什么。 DWR版本似乎是2.0 参考资料/取自：http://directwebremoting.org/dwr/index.html
I have a function memory that takes a function and measures the memory usage of it: import java.lang.management.ManagementFactory def memory[T]( f: ⇒ T )( mu: Long ⇒ Unit ): T = { val memoryMXBean = ManagementFactory.getMemoryMXBean memoryMXBean.gc() val usedBefore = memoryMXBean.getHeapMemoryUsage.getUsed println(s"${memoryMXBean.getObjectPendingFinalizationCount()} pen
我有一个函数memory ，它需要一个函数并测量它的内存使用情况： import java.lang.management.ManagementFactory def memory[T]( f: ⇒ T )( mu: Long ⇒ Unit ): T = { val memoryMXBean = ManagementFactory.getMemoryMXBean memoryMXBean.gc() val usedBefore = memoryMXBean.getHeapMemoryUsage.getUsed println(s"${memoryMXBean.getObjectPendingFinalizationCount()} pending, used $usedBefore")
I'm trying to insert some values in a TableView, but it doesn't display the text in the columns, even though they're not empty because there are three rows (the same number of items I inserted in the TableView) which are clickable. I have the class "ClientiController" which is the controller of the fxml file, and these are the declaration of the TableView and the columns o
我试图在TableView中插入一些值，但它不显示列中的文本，即使它们不是空的，因为有三行（与TableView中插入的项目数相同），它们是点击。 我有类“ClientiController”这是fxml文件的控制器，这些是TableView的声明和tableView的列。 @FXML // fx:id="clientitable" private TableView clientitable; // Value injected by FXMLLoader @FXML // fx:id="nome" private TableColumn nome; // Value injected by FXMLLoader @FXML
I'm pulling a ResultSet from a MySQL database and attempting to dynamically build a TableView on a key down event. It works fine the first time I trigger it, but all subsequent times it creates duplicates of my initial columns while changing the row data for each column to match the new ResultSet. I want the TableView to be cleared completely every time this build function is run. for(int
我从MySQL数据库中提取ResultSet，并试图在关键事件中动态构建TableView。 在我第一次触发它时它工作正常，但随后的所有时间都会创建我的初始列的重复项，同时更改每列的行数据以匹配新的ResultSet。 我希望TableView在每次构建函数运行时都被完全清除。 for(int i = 0; i < rs.getMetaData().getColumnCount(); i++) { final int j = i; TableColumn col = new TableColu
Google promotes their new Java Client library here: https://developers.google.com/appengine/docs/java/googlecloudstorageclient/ Note: I am not talking about the native REST library. I want to work with the Java Client Library. On the website, Google does not specify the import directive for Gradle. For Maven, pom.xml looks like this: <dependency> <groupId>com.google.appengi
Google在此推出新的Java客户端库：https：//developers.google.com/appengine/docs/java/googlecloudstorageclient/ 注意：我不是在谈论本地REST库。 我想使用Java客户端库。 在该网站上，Google没有为Gradle指定导入指令。 对于Maven，pom.xml如下所示： <dependency> <groupId>com.google.appengine.tools</groupId> <artifactId>appengine-gcs-client</artifactId> <vers