I am trying to only accept integers between the values of 1 and 3 using a while loop and nested if statement in Java. Anything outside of this range, produces an error message The program should only accept integers between 1 and 3, any strings of text or decimal values should also produce the same error message and loop back to the original print statement (enter a number: ) The code below
我试图只接受1和3之间的整数使用while循环和嵌套if语句在Java中。 超出此范围的任何内容都会产生错误消息 程序只能接受1到3之间的整数，任何文本或小数值的字符串也应该产生相同的错误信息并循环回原始打印语句（输入一个数字：） 下面的代码运行时没有任何编译器错误，虽然语句|| （a <1 || a> 3））将始终生成错误消息，无论该值如何。 如果我要删除这个语句，程序将运行并且只接受任何值的整数（当输入字符串
I have 2 error messages that I am having trouble figuring out what it is asking me for. The errors are: DesktopInventory ProgramInventoryPart1.java:93: cannot find symbol symbol : variable printer location: class InventoryPart1 System.out.println("Item Number: " + printer.getItemNumber()); DesktopInventory ProgramInventoryPart1.java:95: cannot find symbol symbol : variable printer`en
我有2个错误消息，我无法弄清楚它要求我做什么。 错误是： DesktopInventory ProgramInventoryPart1.java:93: cannot find symbol symbol : variable printer location: class InventoryPart1 System.out.println("Item Number: " + printer.getItemNumber()); DesktopInventory ProgramInventoryPart1.java:95: cannot find symbol symbol : variable printer`enter code here` location: class InventoryPart1
I have ac code like this static S16 test_1603b( const S16 *, const S16 * ); I want to edit this code pragmatically to be something like this static S16 test_1603b( const S16 *varName, const S16 *varName ); So what I did I used Eclipse CDT plugin outside the eclipse, and I have successfully extracted the Abstract syntax tree(AST) and visited all the method parameter declaration, but I can no
我有这样的交流代码 static S16 test_1603b( const S16 *, const S16 * ); 我想用实际的方式编辑这些代码，就像这样 static S16 test_1603b( const S16 *varName, const S16 *varName ); 所以我做了什么，我在Eclipse之外使用了Eclipse CDT插件，并且我已经成功地提取了抽象语法树（AST）并访问了所有的方法参数声明，但是我找不到用新的修改重新编写AST的任何方法，我的代码片段： 公共类RuleChk继承AbstractRule { pub
So I asked a question close this recently and received an very good answer. However the steps that were described seemed more like the steps to create a concrete syntax tree. Each reduction in the LR parsing process corresponds to an internal node in the parse tree. The rule being reduced is the internal AST node, and the items popped off the stack correspond to the children of that internal
所以我最近问了一个问题，并收到了很好的答案。 但是，所描述的步骤似乎更像是创建具体语法树的步骤。 LR解析过程中的每个缩减对应于分析树中的内部节点。 减少的规则是内部AST节点，从堆栈弹出的项目对应于该内部节点的子项。 为goto推送的项目对应于内部节点，而由移位操作推送的项目对应于AST的叶子（令牌）。 把所有这些放在一起，你可以轻松地创建一个AST，每次你做一个缩减的时候创建一个新的内部节点，并且适当地
I want to construct an AST from a list of tokens. I'm making a scripting language and I've already done the lexical analysis part, but I have no idea how to create an AST. So the question is, how do I take something like this: WORD, int WORD, x SYMBOL, = NUMBER, 5 SYMBOL, ; and convert it into an Abstract Syntax Tree? Preferably, I'd like to do so without a library like ANTLR or
我想从一个令牌列表构建一个AST。 我正在编写脚本语言，而且我已经完成了词法分析部分，但我不知道如何创建AST。 所以问题是，我如何采取这样的事情： WORD, int WORD, x SYMBOL, = NUMBER, 5 SYMBOL, ; 并将其转换为抽象语法树？ 最好是，我希望没有像ANTLR这样的图书馆，我宁愿自己尝试从头开始。 但是，如果这是一个非常复杂的任务，我不介意使用库:)谢谢 基本技巧是认识到解析（无论如何实现）都是以增量步骤发生的
I am currently looking for a Java 6/7 parser, which generates some (possibly standartized) form abstract syntax tree. I have already found that ANTLR has a Java 6 grammar, but it seems, that it only generates parse tree, but not syntax tree. I have also read about Java Compiler API - but all the soources mentioned, that it is overdesigned and poorly documented (and I havent found, if it really
我目前正在寻找一个Java 6/7解析器，它可以生成一些（可能是单独的）窗体抽象语法树。 我已经发现ANTLR有一个Java 6语法，但它似乎只能生成分析树，而不是语法树。 我也读过关于Java编译器API的内容 - 但是提到的所有资源都是过度设计和记录不当的（我没有发现，如果它确实生成了AST）。 你知道任何好的解析器库，尽可能标准化输出吗？ 谢谢 基本上JavaCC和ANTLR是目前最好的工具。 您可以在项目的语法存储库中找到可
After much searching I found this question How to create a javafx 2.0 application MDI. What I really wanted to know is if I can create a pop-up window or child window to the main window using JavaFX components and Scene Builder to create the new window. I ended up with this for a modal pop-up window: In the Main class I wanted to save the primary stage to a field I can access from my primary
经过多次搜索，我发现这个问题如何创建一个javafx 2.0应用程序的MDI。 我真正想知道的是，如果我可以使用JavaFX组件和Scene Builder为主窗口创建弹出式窗口或子窗口来创建新窗口。 我结束了这个模式弹出窗口： 在Main类中，我想将主要阶段保存到我可以从主控制器类访问的字段中。 所以，我在Main.Start（）方法中添加了一个静态变量Stage和它： primaryController.primaryStage = primaryStage; 这是primaryController中
I managed to embed JavaFX HTMLEditor inside a Swing desktop application using this this tutorial, locally in Eclipse all works great. My question is how to deploy this to our customers? Oracle have a tutorial for WebStart and Applet deployment but I see no information for desktop apps. Currently I copy libs and binaries from my installed JavaFX SDK into my project and include them when I com
我设法使用本教程将JavaFX HTMLEditor嵌入到Swing桌面应用程序中，在Eclipse中本地化都非常棒。 我的问题是如何将这部署给我们的客户？ Oracle有一个关于WebStart和Applet部署的教程，但我没有看到桌面应用程序的信息。 目前我从已安装的JavaFX SDK中将libs和二进制文件复制到我的项目中，并在编译分发时包含它们： /my/application/lib/javafx/lib/javafxrt.jar /my/application/lib/javafx/bin/[dll:s from JavaFX Runtim
i have a few directories/files with Japanese characters. If i try to read a filename (not the contents) containing (as example) a ク i receive a String containing a . If i try to create a file/directory containing an ク a file/directory appears containing a ?. As example: I list the files with. File file = new File("."); String[] filesAndDirs = file.list(); the filesAndDirs array now con
我有几个日文字符的目录/文件。 如果我尝试读取包含（例如）一个文件名（不是内容），我收到一个字符串包含一个 。 如果我尝试创建包含一个文件/目录的文件/目录，则会出现一个包含？的文件/目录。 例如：我列出了文件。 File file = new File("."); String[] filesAndDirs = file.list(); filesAndDirs数组现在包含这个特殊字符的目录。 该字符串现在只包含 。 它接缝没有任何解码，因为对于文件名中的每个字符，
I want setting the attribute in first modelandview method with the help of bean and trying to get the attributes in other modelandview method in same controller but getting null value my code is below @RequestMapping(value="/insert",method=RequestMethod.POST) public ModelAndView inserData(@ModelAttribute SavingBeansavingBean,HttpServletRequestrs,Model m) { System.out.pr
我想在bean的帮助下在第一个modelandview方法中设置属性，并尝试在同一控制器中获取其他modelandview方法中的属性，但获取空值，我的代码在下面 @RequestMapping（值= “/插入”，方法= RequestMethod.POST） public ModelAndView inserData(@ModelAttribute SavingBeansavingBean,HttpServletRequestrs,Model m) { System.out.println(savingBean.getFirstName()); if (savingBean != null) System.out.p