https://stackoverflow.com/questions/23148347/java-variable-is-already-defined-in-method
Java: Variable is already defined in method
I am trying to make a program which makes a random number between 1000-9999 with no repeating numbers. The rules are I have to label the random number as a String, and then use a while loop to figu...
stackoverflow.com
You've already define your variable answer2 in line 2, and in your while loop you are trying to redefine the variable answer2, i.e:int answer2 = (int)answer1;
You can do it like :
answer2 = (int)answer1;
앞에 type을 붙이면 새로 선언한다는 의미가 됌!
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