Assign values to variables dynamically

[mfalomir]

Im new to Java, Im just beginning with it because I was required to do it at work So long has been a fun ride, I have a question though, is it possible to assign values to variables dynamically ? For example if I have some labels

Label name1;
Label name2;
.
.
Label nameN;

Set their values with a for loop ?

I was hoping that I could do it as with Flash (im an actionscripter)

for ( var i=1; i <= N; i++)
{
this["name" + i].setText("Bla bla bla");
}

Thanks in advanced!

 

[sedj]

No, you cannot do that - its a compiled language, not an interpreted scripting language.

The closest you can get is to have an array :

Label[] labelsArray = new Label[3];
for (int i = 0; i < labelsArray.length; i++) {
  labelsArray[i] = new Label();
  labelsArray[i].setText("Bla " +i);
  
}

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[Diancecht]

Well, Java is not an scripting language, so the inmediate answer is that you cannot build variable names at runtime.

I'd suggest to store all those variables in an array, so you can access them with a loop.

Another way is using reflection to access the variables but it's a bit tricky if you're just beginning. Anyway, you can take a look at

http://java.sun.com/docs/books/tutorial/reflect/

Cheers,

Dian

 

[Diancecht]

Once again, a minute late.

Sorry for double-post.

 

[sedj]

lol, great minds think alike Dian

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[mfalomir]

Hehe, Thanks for your answers, very appreciated