Home Java javaTutorial How to list all classes, interfaces and enumerations in JShell in Java 9?

How to list all classes, interfaces and enumerations in JShell in Java 9?

Aug 31, 2023 pm 07:49 PM

如何在Java 9的JShell中列出所有的类、接口和枚举?

The JShell tool introduced in Java 9 is also known as REPL(Read-Evaluate-Print-Loop)This allows us to execute Java code and get the results immediately. We can quickly evaluate expressions or short algorithms without having to create a new project, compile or build it. With JShell, we can execute expressions, use imports, define classes, methods and >variables.

We can list all classes , interfaces and enumerations using the "/types" command in Defined in the current JShell session.

In the following code snippet, we create the "Test" class, the "TestInterface" interface and the enumeration "EnumTest" in the JShell tool ".

<strong>C:\Users\User> jshell
| Welcome to JShell -- Version 9.0.4
| For an introduction type: /help intro

jshell> class Test {
...>       public static void main(String args[]) {
...>          System.out.println("TutorialsPoint");
...>       }
...>    }
| created class Test

jshell> interface TestInterface {
...>       public void sum();
...>    }
| created interface TestInterface

jshell> enum EnumTest {
...>       TUTORIALSPOINT,
...>       TUTORIX
...>    }
| created enum EnumTest</strong>
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In the following code snippet, use the "/types" command to list all classes and interfaces and enumerations.

<strong>jshell> /types
|   class Test
|   interface TestInterface
|   enum EnumTest
</strong>
<strong>jshell></strong>
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