Array:

• An array is a group of like typed variables that are referred to a common name.
• A specific elements in an array is accessed by its index.

One dimensional array:

• List of like typed variables
• Array declaration type var-name[size];

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• Type specifies an type of data being allocated and size determines number of elements in array.

• Java strictly checks to make sure that you do not try to store or reference value outside the range of array.

• Greater value beyond the limit causes a run time error.

Two Step:

• Declared a variable in a desired array type.
• Allocate a memory that will hold array using new and assign a new variable.

Multidimensional array:

• Actually array of array.

• Java does not use pointer

• String data type is used.

Separators:

• Most commonly used separator in java is semicolon.
• period(.) used to separate packages names from subpackages and classes.