Question

The string called “code” doesn’t seem to read. Why is that and how do I fix it?

My code (the snippet that causes problems):

String code;
for(int z = 0; z<x;z= z+0) // Repeat once for every character in the input string remaining
{
    for(int y=0;y<2;y++) //Repeat twice
    {
        c = (char)(r.nextInt(26) + 'a'); //Generate a random character (lowercase)
        ca = Character.toString(c);
        temp = code;
        code = temp + ca; //Add a random character to the encoded string
    }

My error report:

--------------------Configuration: <Default>--------------------
H:\Java\Compiler.java:66: variable code might not have been initialized
        temp = code;
               ^
1 error

Process completed.

(I am using JCreator 5.00, Java 7.)

(Yes, the error report looks stupid, but it Stack Overflow reads it as coding.)

Answer 1

What value would code have if x is zero? The answer is it would have no value at all (not even null). You could just initialize it to an empty string if you like:

String code = "";