Core Java - Interview Questions and Answers for 'Array initialization' - 6 question(s) found - Order By Newest Q1. If arrays cannot be resized , Why is this code valid
String[] strArray = new String[2];
strArray = new String[5]; Core Java
Ans. We are not resizing the first array here but assigning the reference strArray to a new Array with size 5.
So after line 2, We have 2 arrays in memory, one with size 2 and other with size 5 with strArray referring to second array with size 5. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization Q2. Can we declare an array without assigning the size of an array? Core Java
Ans. No, It will throw compile time error saying "must provide either dimension expressions or an array initializer"
Alternatively we can provide array initializer like
String[] strArray = new String[]{"Buggy","Bread"};
which will initialize it to size 2 with values as "Buggy" and "Bread"
Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization Q3. Is this array declaration correct ? If not , Why ?
String[] strArray = new String[]; Core Java
Ans. No, We haven't specified the size of array to be initialized. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization Q4. Is this array initialization correct ? If Yes, What will be the size of array ?
String[] strArray = new String[]{"Buggy","Bread"}; Core Java
Ans. Yes, size of the array will be 2. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization Q5. Is this array initialization correct ? If Yes, What will be the size of array ?
String[] strArray = new String[3]{"Buggy","Bread"}; Core Java
Ans. No. It will result in error saying "Cannot define dimension expressions when an array initializer is provided" Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization Q6. Is this code valid
String[] strArray = new String[2];
strArray.length = 5; Core Java
Ans. It will give compile time error saying "The final field array.length cannot be assigned"
Arrays once initialized cannot be resized. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  arrays  array initialization