[Solved] Which of the following is a valid way to declare an array and get its length in Java? — Ans: int[] arr = new int[5]; int len = arr.length; | Java

Java - Arrays

Which of the following is a valid way to declare an array and get its length in Java?

Aint[] arr = new int[5]; int len = arr.length;

Bint arr[] = new int(5); int len = arr.length();

Cint arr[] = new int[5]; int len = arr.size();

Dint arr = new int[5]; int len = arr.length;

Step-by-Step Solution

Solution:

Step 1: Check array declaration syntax
Correct array declaration uses square brackets and new int[5] to allocate size.
Step 2: Check length access syntax
Length is accessed as a property without parentheses: arr.length.
Final Answer:
int[] arr = new int[5]; int len = arr.length; -> Option A
Quick Check:
Array declared with [] and length accessed as property [OK]

Quick Trick: Declare arrays with [] and use .length property [OK]

Common Mistakes:

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Which of the following is a valid way to declare an array and get its length in Java?