Jshell: Declare variables

Syntax

dataType variableName

dataType variableName = value

 

Step 1: Open terminal and execute the command jshell.

$jshell
|  Welcome to JShell -- Version 10.0.2
|  For an introduction type: /help intro

jshell>

 

Step 2: Execute below statement.

int x

jshell> int x
x ==> 0

‘x ==> 0’ specifies that x contains value 0.

 

Step 3: Just type the variable ‘x’ and press enter key to know the value of variable x.

jshell> x
x ==> 0

 

You can assign any other value to x.

jshell> x = 30
x ==> 30

jshell> x = 40
x ==> 40

Can I declare the variable twice in jshell?

Yes, you can declare. In this case recent declaration overrides previous declaration.

jshell> int a = 10
a ==> 10

jshell> int a = 20
a ==> 20

jshell> a
a ==> 20

 

 

 

 

 

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