CODEWITHSUNDEEP
javaloopsfor-loop
Raj kumar
Raj kumar

Reputation: 117

How to pass variable outside loop?

I've this variable:

String foo;

for(String links: Result){

    String myVariable="\n"+foo;
}

System.out.println(foo); //loop is giving error here..

How to use foo variable outside for loop in Java?

Upvotes: 1

Views: 2718

Answers (2)

Vihar
Vihar

Reputation: 3831

you just need to do

String foo=null; //or any default value you want your string to contain

for(String links: Result){

    String myVariable="\n"+foo;
}

System.out.println(foo);

your error is, you have declared a variable but not initialized it,

you can have a look at this link to understand why this error was caused.

Hope this helps!

Good luck!

Upvotes: 2

Thomas
Thomas

Reputation: 6670

Here, you could almost eliminate the for loop, entirely, and see the issue with the code in your post (as the for loop is not actually doing anything to String foo. So, as another user suggested, although you have declared foo, you have not done anything with the variable to give it a value.

So, your code is essentially: 

String foo;    
System.out.println(foo);

Were your for loop to modify foo, then you would see a result: 

String foo;

for(String links: Result){

    foo = foo + "a value added each time the loop iterates";
}

System.out.println(foo);

Upvotes: 0

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