java-13

问题 All the documentation I've been able to find mentions the 'jre/lib/ext' folder but such does not exist on my JRE 13 installation. I guess somewhere between Java 8 (where I can see the jars in jre/lib/ext) and Java 13, they moved but I've been unable to pinpoint when and how it was done. Could someone please elaborate what's going on with new JRE's, in terms of where the extension classes reside currently? 回答1: The extension mechanism is gone with Java 9, not only moved [:-| , see the

问题 I'm wanting to create a schedule that wraps around week by week. Because the schedule is the same from one week to the next, the only information I need to store is the day of the week, and the time it occurs. eg. Monday 2:30pm . The actual date isn't important, nor is time zone. So far I've been writing my code with the day and time separate, using the DayOfWeek enum and the LocalTime type to work with times. But I've started to run into issues with using two variables to manage time instead

问题 I'm wanting to create a schedule that wraps around week by week. Because the schedule is the same from one week to the next, the only information I need to store is the day of the week, and the time it occurs. eg. Monday 2:30pm . The actual date isn't important, nor is time zone. So far I've been writing my code with the day and time separate, using the DayOfWeek enum and the LocalTime type to work with times. But I've started to run into issues with using two variables to manage time instead

问题 I just tried the new text block feature in Java 13 and encountered a small issue. I have read this article from Jaxcenter. The closing triple quotation marks will affect the format. String query = """ select firstName, lastName, email from User where id= ? """; System.out.println("SQL or JPL like query string :\n" + query); This above format works well. To align with the the closing delimiter ("""), the multiline string left spaces before every lines. But when I tried to compare the following

问题 I have a old application running a Swing client. I upgraded from Java 7 to 8 a long time ago. The upgrade went fine. Ever since I have wanted to upgrade to Java 9, then 11 and now 13. However this is where I meet problems. The UI looks fine and as intended with Java 8, but any newer Java version will somehow change the font sizes and maybe components for some reason. I do not have any pictures to show because the application is maintained on a network without internet access because of

问题 I cannot add jdk11 and jdk13 in intelliJ as SDK. I am able to add jdk-18.0_22 only. Why is that so? 回答1: Based on the comment from @MarsAtomic, I would guess that your version of Intellij (14.1.4) is too old to use the new versions of java. 14.1.* was last released on May 11, 2016. JDK 11 reached General Availability on 25 September 2018. 回答2: The implication of Java 11 in IntelliJ IDEA 2018.2 is that you need to use Intellij IDEA 2018.2 or later to work with Java 11. I expect that one reason

问题 I'm using Gradle (6.0.1) with the moduleplugin to build an application out of JPMS modules using JDK 13. However, even with the application plugin applied & its mainClassName set it does not set the ModuleMainClass attribute in module-info.class , so when I jlink it up into a standalone JVM and run java -m mymodule I get this message: module mymodule does not have a ModuleMainClass attribute, use -m <module>/<main-class> Digging under the hood it looks like the moduleplugin doesn't change the

问题 Confirmation on below issue : Has Selenium 3.141 support for jdk 13? Please refer me which combination of java or selenium versions I can use. 回答1: We are yet to see any official documentation released if the latest version of Selenium supports java-13. However there are some existing compatibility issues between Selenium and java versions other than java-8 as follows: java-9: An illegal reflective access operation has occurred while executing automated tests using Selenium and Java 9 java-11

问题 Java 13 is coming, so I started studying its new features, one of which is text blocks . I wrote a simple program public final class Example { public static void main(String[] args) { final String greeting = """Hello It's me, Andrew!"""; System.out.println(greeting); } } I was expecting to see Hello It's me, Andrew! What I got is a compilation error saying illegal text block open delimiter sequence, missing line terminator 回答1: The context of your text block must start from a new line. public

问题 In eclipse compiler window Java 13 is not showing. How to enable JDK compilance level 13 for eclipse 2019-09 / How to update JavaSE-13 support for project Buildpath . 回答1: For supporting Java 13 in eclipse there are two types of methods to follow 1. Drag install button from the following link into eclipse Install button highlighted in red color. Drag Install button for Installing Java 13 support for eclipse After dragging into eclipse IDE confirm window is displayed like below. Click on