Sundar Rajan :
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 conversion from int to byte
| byte b=5<<-1;
| ^---^
jshell> 5<<-1
$2 ==> -2147483648
jshell>
Is there an alternative like Python type(5<<-1) to find the result type of expression or variable in Jshell.
Sundar Rajan :
Just figured out it can be solved by setting the feedback mode.
/set feedback verbose
Reference https://docs.oracle.com/javase/9/jshell/feedback-modes.htm
Now can easily find the type of an expression or variable in the response.
jshell> 5<<-1
$15 ==> -2147483648
| created scratch variable $15 : int
The mode can be reset by using the command
/set feedback normal
and the current mode can be queried by simply calling
/set feedback
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