Why Does Printing a Java Array Produce Unexpected Output?

Java Arrays: Exploring Output Anomalies

Encountering unexpected output when printing arrays in Java can be puzzling for新手s. In this case, attempting to display the elements of an int array results in an enigmatic string of characters and numbers.

Understanding Array Output

By default, Java arrays display their internals by printing the class name, followed by the "@" symbol and the hash code of the array. This default representation doesn't provide immediate insights into the actual data stored in the array.

Customizing Output Format

To display the array's contents as intended, several options are available:

1. Using Arrays.toString() Method:

   The java.util.Arrays class offers a static method called toString() that helps format arrays into human-readable strings. It encompasses the entire array and displays individual elements, separated by commas.

   System.out.println(java.util.Arrays.toString(arr));

2. Implementing a Custom Loop:

   Iterating through the array's elements using a for loop allows for more control over the output format. This approach involves explicitly specifying the indexing of each element and formatting it as desired.

   for (int i = 0; i < arr.length; i++) {
       System.out.println(arr[i]);
   }

By utilizing methods and techniques that tailor output format according to specific requirements, users can gain greater clarity and control over the display of array contents.

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