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JAVA CERTIFICATION QUESTION: Declaring and initializing one-dimensional arrays in Java

February 5, 2022

There are several ways to create an array and initialize an array declaration.

Some can be used anywhere. Others can’t.

 

Which code will print 0 to console? Choose one.

 

A. int arr1[] = new int[10];

System.out.print(arr1[0]);

B. int arr2[10] = new int[10];

System.out.print(arr2[3]);

C. int[] arr3 = new int[0]{};

System.out.print(arr3.length);

D. int[] arr4 = {0,0};

System.out.print(arr4[arr4.length]);