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Android Build a Simple Android App (2014) Basic Android Programming Using the Random Class

I am stuck

I just can't figure out how to do this challenge. I think I got it right but it says that I am wrong. Does anybody know how to do this challenge? Thanks

RandomTest.java
Random randomGenerator = new Random();
int randomNumber = randomGenerator.nextInt(10);
String intAsString = "";
randomNumber + "";

2 Answers

Harry James
Harry James
14,780 Points

Hey Tim!

You were close - you're setting intAsString to a blank String but instead, we want to set it to the integer in its String form.

Ben showed you earlier how we can convert an integer to a String just by concatenating a blank String to the end of it. Do you remember how to do that? Give it a go ;)

If you need a refresher, check out the Previous Video at the 03:10 marker.


If you get stuck along the way, leave me a message here and I'll help you out a bit more :)

I am thankfull that you replied so quick, and I think I know what you mean. I tried changing the = to a +, but this didn't work. Did you ment to do this, or did I got your hint wrong?

Harry James
Harry James
14,780 Points

Hey Tim!

You still need the = to define the variable but after that, we want to set the value to the integer + the blank String. This forces Java to convert the integer to a String :)

I think I get what you mean, and I tried it another way: Random randomGenerator = new Random(); int randomNumber = randomGenerator.nextInt(10); String intAsString = Int.toString(randomNumber); This worked. Thanks for your help!!

Pedro Sousa
seal-mask
.a{fill-rule:evenodd;}techdegree
Pedro Sousa
Python Development Techdegree Student 18,546 Points

Hello Tim,

doing this

String intAsString = "";
randomNumber = "";

your just creating an empty string and assigning another empty string to randomNumber (which, actually will not work, since randomNumber is an integer.

What the challenge is asking you to do is to write the number to the string variable. I didn't check the videos, but by "moosh" I think you're actually meant to just concatenate the number to a string;

Does this help?

Tell me if it doesn't.

I don't really get what you mean, I am sorry if I am a bit of a noob. I'm just getting started. I tried changing the = to a +, but this didn't work. Was this your hint or did I get it wrong? Thanks for the quick reply btw