Question

This is a portion of my Java code, the IDE is Eclipse. ‘Lines’ is an array of strings.

//build anchor inner text
int Count = Lines.length;
String Text = ""; //<----------Eclipse shows warning here
for (int Index=0; Index<Count; Index++) {
  Text += Lines[Index];
  if (Index<Count-1)
    Text += "<br/>";
}

The ‘Text’ variable is declared outside the ‘for’ loop, however, it is used inside.
Eclispe shows this warning to me: “The value of the local variable Text is not used” at the declaration line of variable ‘Text’.

How could it be so? It is used inside the ‘for’ loop.

Answer 1

You’re assigning an empty string to your variable Text, and then not definitely reading it (at least in the snippet shown). When Count == 0, or even when Count < 1, the loop body won’t get executed, and so Text isn’t used. I presume you’ll do something with Text later on, though?