Why Do Java Arrays Output Unfamiliar Characters Instead of Expected Values?

Java Arrays Outputting Unfamiliar Characters and Text

When working with arrays in Java, you may encounter an unexpected output when attempting to print the contents of an array. Instead of displaying the expected numerical values, the output may display characters and text that appear incomprehensible.

To understand this behavior, it's important to recognize that every object in Java has a default toString() method. This method, when called, outputs the class name of the object, followed by an "@" symbol and a hash code unique to the object. When you print an array, it's the default toString() method that is invoked, resulting in the unusual output you see.

To print the actual values contained within the array, there are two common approaches:

1. Using java.util.Arrays.toString(arr):

This method is specifically designed to generate a string representation of the array's contents. It can be used to print the array's values in the desired format. For example:

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

2. Using a For Loop:

You can iterate through the array elements using a for loop and manually construct the output string:

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

By utilizing either of these techniques, you can output the array's contents as the expected numerical values instead of the default object representation.

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