CODEWITHSUNDEEP
java
John Doe
John Doe

Reputation: 2924

error: '.class' expected in the following Java code

Here in the following code I am trying to print the difference of two arrays but I am getting this class error: '.class' expected

Its coming on here

  ArrayCopy9526.java:15: error: '.class' expected
       int[] buffer = new int[array1];

And below is my full code.

public class ArrayCopy9526 {
   public static void main(String[] args){
      int[] sourceArr = {0,1,23,4,45,5,667,7,764,8,23};
      int[] arrayAno = {2,3,34,45,456,56,13,123,8,23};


      arrayDiff(sourceArr, arrayAno);

   }
  public static void arrayDiff(int[] arrayOne, int[] arrayTwo){
     int array1 = arrayOne.length;
     int array2 = arrayTwo.length;

      if(array1 < array2)   
       int[] buffer = new int[array1];
     else
       int[] buffer = new int[array2];

       for(int i = 0; i < array1; i++ ){
         for(int j= 0; j < array2; j++) {
           if(arrayOne[i] != arrayTwo[j]){
            buffer[i] = arrayOne[i];
           }
         }             
       }

    for(int i :buffer){
        System.out.println(i);
    }
  } 
}

What's wrong with this code?

Upvotes: 2

Views: 228

Answers (2)

Bathsheba
Bathsheba

Reputation: 234865

buffer goes out of scope at the end of the if statement.

Declare buffer before the if or use a ternary operator:

int[] buffer = new int[array1 < array2 ? array1 : array2];

Upvotes: 1

rgettman
rgettman

Reputation: 178323

For the bodies of your if and else, you must have a statement or a block, not a declaration. The ".class expected" message is confusing, but it comes on the declaration. "Not a statement" might have been a clearer message.

Declare your buffer before your if and assign it in your if and else.

int[] buffer;
if(array1 < array2)
   buffer = new int[array1];
else
   buffer = new int[array2];

Upvotes: 5

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