Creating Strings from while loop (Java)

kelbal · 28-11-2011 06:10PM #1

I'm trying to create a range of Strings, the names depending on an integer. Something like this........

int i=1;
while (i<11)
{
String Valuei = "text"+i;

i++;
}

So that I end up with 10 strings- Value1=text1, Value2=text2 and so on

But the syntax that I've mentioned "String Valuei = "text"+i;" is obviously made up - I'm looking for the correct way to implement this. Can't find anything obvious so far.
Any of you done this before?

Thanks in advance

Giblet · 28-11-2011 06:27PM

You need either an array or a dictionary / hashmap of some sort.

String myStrings = new String[10];

for(int i = 0; i < myStrings.length; i++){
   myStrings[i] = "text" + i;
}

If you need a key-value pair for some reason (which i doubt, you prob just want 10 strings stored somewhere with dynamic values), you could use a HashMap (I haven't used java in years so might be slightly outdated here)

HashMap hash = new HashMap();
for(int i = 0; i < 10; i++){
  hash.put("Value" +i, "Text" +i);
}

hash.get("Value1"); // should equal "Text1"

seamus · 28-11-2011 06:29PM

You want to create an array of strings.

Having variables with variable names is problematic and painful.

Better off saying

int i=1;
String[] value = new String[10];
while (i<11)
{
	value[i-1] = "text"+i;
	i++;
}

I think that's the Java syntax anyway.

If you don't know what an array is or you've never seen "String[]" before, a quick google should reveal all.

Anima · 28-11-2011 07:45PM

Use String.Format maybe.

[PHP]
int i = 1;
Vector<String> myStrings = new Vector<String>();

while (i < 11)
{
myString.add( String.Format ("text %d", i++) );
}
[/PHP]

If you don't know what vector is, its just a dynamic array. The main thing is that String.Format will create a new String when you call it. Some of the syntax might be wrong, I haven't used Java since a few years.

Creating Strings from while loop (Java)

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