How Can I Correctly Initialize and Access Elements in Java Arrays?

Initialization of Arrays in Java

When declaring arrays in Java, it's crucial to understand the proper syntax and initialization techniques to avoid common pitfalls.

In the provided Java code, the following line:

data[10] = {10,20,30,40,50,60,71,80,90,91};

results in a syntax error. This issue arises because Java arrays store a reference to an array object rather than the data itself. As a result, attempting to assign a new array directly to an element of an array is incorrect.

To resolve this error and properly initialize an array in Java, you can use an array initializer. This feature allows you to specify the initial values of an array during its declaration, as shown below:

int[] data = {10,20,30,40,50,60,71,80,90,91};

Alternatively, you can initialize an array using the following syntax:

int[] data;
data = new int[] {10,20,30,40,50,60,71,80,90,91};

Please note that the first declaration is preferred over the second one when initializing an array during its creation.

Additionally, accessing data[10] in the original code is also incorrect. Java arrays have 0-based indexing, meaning the valid indices range from 0 to 9. Attempting to access an index beyond the array bounds will result in an ArrayIndexOutOfBoundsException.

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