Which of the following is NOT a valid data type in Java?Points:1arrayStringintfloatI don't know

To determine which of the options is NOT a valid data type in Java, let's analyze each one:

1. array: In Java, array is not a data type by itself. Instead, arrays are a structure that can hold multiple values of a specific data type. For example, int[] is an array of integers, but array alone is not a valid data type.

2. String: This is a valid data type in Java. It is used to represent sequences of characters.

3. int: This is a valid data type in Java. It is used to represent integer values.

4. float: This is a valid data type in Java. It is used to represent floating-point numbers.

5. I don't know: This is not a data type; it is an option indicating uncertainty.

Based on the analysis, the option that is NOT a valid data type in Java is:

array