java-10

问题 I use open-jdk-10 . mvn clean install Could not find artifact com.fasterxml.jackson.module:jackson-modules-java8:jar:2.9.8 in" central" <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>group</groupId> <artifactId>artifact</artifactId> <packaging>pom<

问题 Well, I really thought that this would work (inside a method): var x, y = 1; var x = 1, y = 2; But it does not, it would not compile - "var is not allowed in a compound definition". I guess the reason for this is an usual trade-off. This is not a very used feature and thus not implemented, but we could yes and may be might in a future release... 回答1: Well, if you give it a manifest type: int x, y = 1; This declares two int variables, and initializes one of them. But local variable type

问题 I have created a multimodule project with the following structure myproject |- mymodule |- src |- main |- java |- com |- mymodule |- Util.java |-newmodule |-src |-main |-java |-com |-newmodule |- Main.java |-module-info.java Now i want to use Util.java which is a non modularized code in a modularized module newmodule. i have declared following in newmodule module newmodule { requires mymodule; } Project is compiling fine, but Intellij is showing module not found and package com.mymodule is

问题 I have created a multimodule project with the following structure myproject |- mymodule |- src |- main |- java |- com |- mymodule |- Util.java |-newmodule |-src |-main |-java |-com |-newmodule |- Main.java |-module-info.java Now i want to use Util.java which is a non modularized code in a modularized module newmodule. i have declared following in newmodule module newmodule { requires mymodule; } Project is compiling fine, but Intellij is showing module not found and package com.mymodule is

问题 I have to use java.xml.ws* components in my project but because it's deprecated and will be removed soon I want to use replacement for these components. So I added this dependency to my project's pom file: <dependency> <groupId>com.sun.xml.ws</groupId> <artifactId>jaxws-ri</artifactId> <version>2.3.0</version> <type>pom</type> </dependency> This is my module configuration: module x.y.z { requires kotlin.stdlib; requires spring.boot; requires spring.boot.autoconfigure; requires spring.context;

问题 I have a Java 10 application on Windows Server 2016 which is continually writing to a file using java.util.logging. In Windows File Explorer, the "Last modified" and "Size" columns do not update. Pressing [F5] does not update the details. DOS DIR gives the same incorrect answer. Right Click > Properties > Details gives an even different (and older) answer. Only running DOS TYPE or opening/closing (without save) in Notepad on the file, seems to cause File Explorer and DOS DIR to update. I

问题 Java 10 has introduce Local-Variable Type Inference feature JEP-286. We can use Local-Variable Type Inference using var which is reserved type name But there are some restrictions of using it. Can someone please summarise in which cases i will be not able to use var ? 回答1: 1. As the name suggests, you can use it only for local variables. 2. Local type inference cannot be used for variables with no initializers e.g Below code will not work Case 1: var xyz = null; ^ (variable initializer is

问题 I have installed netbeans (Apache version) with JDK 10 successfully, but can't use var keyword in my project, It keep saying cannot find symbol . Any help would be appreciated. 回答1: To use the var keyword with JDK 10 in NetBeans: Ensure that you are running the latest version of Apache NetBeans. In NetBeans add JDK 10 as a Java platform ( Tools > Java Platforms > Add Plaform... ). It is not necessary to make JDK 10 the default. Create a simple Java application ( File > New Project... > Java >

问题 After upgrading to Java 10 (from 8), I'm getting these errors: InaccessibleObjectException: Unable to make field private javafx.scene.control.Button tech.flexpoint.dashman.controllers.configurator.RegistrationController.registerButton accessible: module tech.flexpoint.dashman does not "opens tech.flexpoint.dashman.controllers.configurator" to module javafx.fxml Does it mean I should make them public? Does that make the @FXML annotation essentially useless in Java 9 and 10? 回答1: Since you're

问题 After upgrading to Java 10 (from 8), I'm getting these errors: InaccessibleObjectException: Unable to make field private javafx.scene.control.Button tech.flexpoint.dashman.controllers.configurator.RegistrationController.registerButton accessible: module tech.flexpoint.dashman does not "opens tech.flexpoint.dashman.controllers.configurator" to module javafx.fxml Does it mean I should make them public? Does that make the @FXML annotation essentially useless in Java 9 and 10? 回答1: Since you're