Why Do I Get a NullPointerException When Creating an Array of Objects in Java?

NullPointerException while Creating an Array of Objects

In Java, creating an array of objects requires understanding both array initialization and object instantiation. A common issue encountered is the NullPointerException during this process.

In the provided code, the exception occurs when you try to access the name property of boll[0] before it has been initialized. An array is created using the new operator, but each element in the array must be explicitly initialized to a new object.

To resolve this issue, you must initialize the boll[0] element before assigning any values to its properties:

boll[0] = new ResultList();
boll[0].name = "iiii";

By adding this line, you create a new ResultList object and assign it to the first element of the boll array. This ensures that boll[0] is no longer null and can now be accessed to set its name property.

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