JShell is an interactive REPL tool to execute and evaluate simple Java programs like variable declarations, statements, expressions, and etc.
When the JShell tool launched, the code has pre-loaded by default. To display this code, we just launch the command "/list -start". It is possible to ask JShell to load them automatically when it starts by using the command: "/set start [-retain] [Type]". The first option "-retain" tells JShell to record the desired [Type] startup for the next JShell sessions. If we don't specify it, the default startup can be launched when opening a new session
/set start [-retain] -File /set start [-retain] -Default /set start [-retain] -none
In the below code snippet, we can use "/set start [-retain] -File" command,
jshell> /list -start s1 : import java.io.*; s2 : import java.math.*; s3 : import java.net.*; s4 : import java.nio.file.*; s5 : import java.util.*; s6 : import java.util.concurrent.*; s7 : import java.util.function.*; s8 : import java.util.prefs.*; s9 : import java.util.regex.*; s10 : import java.util.stream.*; jshell> /set start -retain save.jsh jshell> /exit | Goodbye C:\Users\User>jshell | Welcome to JShell -- Version 9.0.4 | For an introduction type: /help intro jshell> /list -start s1 : int x = 20; s2 : double y = 30; s3 : public int sum(int a, int b) { return a + b; } s4 : String str = "TutorialsPoint";
In the below code snippet, we can use "/set start [-retain] -none" command.
jshell> /set start -retain -none jshell> /exit | Goodbye C:\Users\User>jshell | Welcome to JShell -- Version 9.0.4 | For an introduction type: /help intro jshell> /list -start
In the below code snippet, we can use " /set start [-retain] -Default" command.
jshell> /set start -retain -default jshell> /exit | Goodbye C:\Users\User>jshell | Welcome to JShell -- Version 9.0.4 | For an introduction type: /help intro jshell> /list -start s1 : import java.io.*; s2 : import java.math.*; s3 : import java.net.*; s4 : import java.nio.file.*; s5 : import java.util.*; s6 : import java.util.concurrent.*; s7 : import java.util.function.*; s8 : import java.util.prefs.*; s9 : import java.util.regex.*; s10 : import java.util.stream.*;