jshell Questions

2

Solved

I am using the new intellij Jshell console (introduced here https://blog.jetbrains.com/idea/2017/09/java-9-and-intellij-idea/) I created a simple class file Test2.java public class Test2 { publ...
Ironware asked 8/1, 2018 at 3:44

4

Solved

When using the JShell, how do I exit it back to the CMD line? I have already tried ctrl + x and just writing quit, but to no joy.
Chura asked 25/10, 2017 at 10:30

5

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Given that Java 9 is upon us and we can finally have a java REPL with jshell I was hoping there was a way to add a shebang to a script and have jshell interpret it. I tried creating test.jsh: #!/...
Deckhouse asked 5/7, 2017 at 3:36

9

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I am using the 'jshell command in my machine it is not recognised. But java command is working fine. is there any environment setup for jshell in jdk 10 C:\Users\Kannan λ jshell 'jshell' is not re...
Confirmand asked 26/3, 2018 at 17:10

1

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Background: Since Nashorn is being dropped in JDK15, I am looking for an alternative for an application I am working on. I am currently only using for the dynamic execution of some user-definable ...
Cajole asked 1/6, 2020 at 15:36

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I was trying to understand jshell and fumbled to import external library. As of date I couldn't see any suggestion/solution for this. Can someone please let me know if already figured this out.
Lucey asked 30/3, 2017 at 7:17

7

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I didn't find any command to clear Java-9 JShell console. I also tried to clear the JShell Console through this program, but it doesn't work either. import java.io.IOException; class CLS { publi...
Perfidy asked 25/4, 2016 at 17:58

3

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How to instruct jshell to terminate at the end of the script similarly to interpreters of other languages like for example python3 or node? Following command ./jshell -q /tmp/shell.java with sc...
Lampoon asked 12/4, 2017 at 19:10

1

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In JShell, if I do this: interface Foo { String foo(); } (Foo) () -> "hi" I get | created interface Foo $2 ==> $Lambda$15/0x00000008000a9440@32e6e9c3 From the research below, I kn...
Sublimity asked 24/6, 2022 at 3:55

5

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I have a local Maven project under development. How can I launch jshell with the project class path with all the dependencies, so that I can test project or dependency classes inside JShell.
Philender asked 7/12, 2017 at 22:40

5

I was trying out jshell and couldn't find option to paste multiple line expressions. Is it even possible to paste multiple lines in jshell. Similar to what scala offers with paste mode.
Shakira asked 24/1, 2017 at 16:53

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Question I am willing to pass arguments to a jshell script. For instance, I would have liked something like this: jshell myscript.jsh "some text" and then to have the string "some text" availab...
Cohosh asked 15/10, 2017 at 14:59

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Java 9 has a read-eval-print loop for Java, called jshell. I've seen it work in it's basic mode, from the command line. Can it also be used in a remote process? In other words, can I connect to ano...
Lattimore asked 5/7, 2017 at 15:6

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I'd like to run an entire file with JShell like: $ jshell my-jshell-skript.java Where e.g. the content of my my-jshell-skript.java is 40 + 2;. Or alternatively an executable like: #!/usr/bin/j...
Snafu asked 26/9, 2017 at 12:25

4

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As Java 9 introduced the concept of JShell which enables us to write code without creating a class and a method, is it possible to use this feature of Java 9 in eclipse ?
Restless asked 18/10, 2017 at 8:20

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Does anybody know where JShell history is stored (Java-11/Open JDK on Windows-10, but any config might be useful)? I've been looking around in $HOME ($USERPROFILE, $APPDATA, ...). Is it file based?...
Deary asked 27/2, 2019 at 15:31

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I just started using jshell in intellij idea community version. When I write the below code in jshell, it works. List<String> list = List.of("a", "b", "c"); System.out.println(list); Howev...
Havoc asked 14/6, 2020 at 2:0

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I was just playing around with JShell, and it seems that defining class Z{} and then defining var z = new Z() does not work. But using different class names, like class X and class A, does work. S...
Stannic asked 30/5, 2020 at 12:21

2

Suppose I do this in jshell: jshell> void printIsEven(int i) { ...> System.out.println(i % 2 == 0); ...> } | created method printIsEven(int) jshell> List<Integer> l = Arrays.a...
Annunciator asked 29/5, 2017 at 4:36

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How to find the type of a variable or Expression Result in JShell. Was experimenting Bitwise Operators in Java jshell> byte b=5<<-1; | Error: | incompatible types: possible lossy convers...
Bayless asked 5/2, 2018 at 18:33

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when I open windows cmd and type jshell , it works, but when I'm writing something . whenever I press the BackSpace key . for example if I want to delete a letter that is wrong . jshell crashes wit...
Huai asked 29/5, 2019 at 7:11

3

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Question: How to take user input in jshell script? or what I'm doing wrong? Note: I'm NOT looking how to pass arguments to jshell script. Example: For example script hello.java: Scanner in = n...
Selhorst asked 2/1, 2018 at 15:16

1

JShell by default enables a persistent history of everything typed, which can be recalled by pressing the up arrow. Where is the setting to turn this ❝feature❞ off? Also, how do I even clear the ...
Troat asked 14/10, 2018 at 18:7

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From inside jShell script, is it possible to access or register variables that are defined in code that's also creating JShell? Currently there seems to be no mechanism to either access or registe...
Jacky asked 1/3, 2019 at 21:54

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Are there any way to execute java command on REPL (jshell) as inline command without launching it? E.g. Perl inline command $perl -e 'printf("%06d", 19)' 000019 I have to launch jshell to run ...
Eduino asked 14/10, 2017 at 1:13

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