mcupak

jshell> /help
|  Type a Java language expression, statement, or declaration.
|  Or type one of the following commands:
|  /list [<name or id>|-all|-start]
|  	list the source you have typed
|  /edit <name or id>
|  	edit a source entry referenced by name or id
|  /drop <name or id>
|  	delete a source entry referenced by name or id
|  /save [-all|-history|-start] <file>

mcupak

jshell> /drop sayHello
|  dropped method sayHello(String)

jshell> /edit HelloPrinter
|  modified class HelloPrinter

mcupak

jshell> String sayHello(String name) {return "hello "+ name;}
|  created method sayHello(String)

jshell> sayHello("readers of the blog")
$2 ==> "hello readers of the blog"

jshell> /methods
|    String sayHello(String)

jshell> class HelloPrinter{ public static void sayHello(){System.out.println("hello readers of the blog");}}

mcupak

jshell> /l

   1 : 1+1
   2 : int x = 1+1;
   3 : System.out.println(x)
   4 : Thread.sleep(5000)
   5 : import java.time.*;
   6 : ZonedDateTime.now()

mcupak

jshell> /vars
|    int $1 = 2
|    int x = 2
|    ZonedDateTime $7 = 2017-10-12T14:55:59.309666-04:00[America/Toronto]

jshell> /list

   1 : 1+1
   2 : int x = 1+1;
   3 : System.out.println(x)

mcupak

jshell> ZonedDateTime.now()
|  Error:
|  cannot find symbol
|    symbol:   variable ZonedDateTime
|  ZonedDateTime.now()
|  ^-----------^

jshell> import java.time.*

jshell> ZonedDateTime.now()

mcupak

jshell> /imports
|    import java.io.*
|    import java.math.*
|    import java.net.*
|    import java.nio.file.*
|    import java.util.*
|    import java.util.concurrent.*
|    import java.util.function.*
|    import java.util.prefs.*
|    import java.util.regex.*

mcupak

jshell> Thread.sleep(5000)

mcupak

jshell> System.out.println(x)
2

mcupak

jshell> int x = 1+1
x ==> 2