<div>
answer and indexR &nbsp; &nbsp;should have some value before you can get a substring or index the substring.<br />
<br />
What's the rest of the code prior to this one?<br />
<br />
;JOOP!
</div>


answer and indexR    should have some value before you can get a substring or index the substring.

What's the rest of the code prior to this one?

;JOOP!

<div>
In Java, all the local variables should be initialized before you can use<br />
them.
</div>


In Java, all the local variables should be initialized before you can use
them.

<div>
<div class="content wysiwyg-content">
Hey experts,<br />
I get this error &quot;Variable userInp might not have been initialized&quot; &nbsp;to the below code:<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; answer = Calculator(userInp, op1 , op2) + answer.substring(indexR + 1);<br />
<br />
does anyone knows why im getting this error ??<br />
<br />

</div>
</div>


Hey experts,
I get this error "Variable userInp might not have been initialized"  to the below code:

                        answer = Calculator(userInp, op1 , op2) + answer.substring(indexR + 1);

does anyone knows why im getting this error ??



Variable might not have been initialized ????

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

A programming language is a formal constructed language designed to communicate instructions to a machine, particularly a computer. Thousands of different programming languages have been created, mainly in the computer field, and many more still are being created every year. The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning). Some languages are defined by a specification document (for example, the C programming language is specified by an ISO Standard), while other languages (such as Perl) have a dominant implementation that is treated as a reference. Some languages have both, with the basic language defined by a standard and extensions taken from the dominant implementation being common.